7th Grade Math: Expressions
An expression is a combination of numbers, operators, grouping symbols (such as brackets and parentheses) and/or free variables and bound variables arranged in a meaningful way which can be evaluated. Bound variables are assigned values within the expression (they are for internal use) while free variables can take on values from outside the expression.
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Our expressions videos
replace text-based tutorials in 7th grade math books and give you better, step-by-step explanations of expressions. Watch each video repeatedly until you understand how to approach expressions problems and how to solve them.
- Tons of video tutorials on expressions make it easy for you to better understand the concept.
- Tons of word problems on expressions give you all the practice you need.
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7th Grade: Expressions Videos
Combining Like Terms
Video Clip Length:
1 minute 13 seconds
Video Clip Views:
This tutorial shows how to combine like terms in given polynomial, the variables, and the constants. You will learn to combine the coefficients of the same variable as well as pay attention to the signs of coefficients, for there are different rules for different signs and same signs.
Solving Equations with Decimal Coefficients and involving Decimal Division
Video Clip Length:
3 minutes 5 seconds
Video Clip Views:
The tutorial will show you how to solve the linear equation for missing variable, k. You need to combine like terms, the variables, k, first. Then, you need to simplify by using additive inverses and then to continue to solve for k.
Solving Multi Step Equations 2
Video Clip Length:
2 minutes 12 seconds
Video Clip Views:
This tutorial will show you how to solve linear equations with multiple steps. In order to solve for y, you need to combine like terms. First, reduce by adding constants on the left hand side together, then next, you should combine like terms, y's, and then get y by itself with undoing mutliplication using division.
expressions video clips for 7th grade math students.
7th Grade: Expressions Word Problems
Erica hiked up a mountain trial
Erica hiked up a mountain trial at 3km/h and returned at 4k/h. The entire trip took five hours 10 min including the half an hour she spent at the ...
Mr. Jenkins can dig a ditch
Mr. Jenkins can dig a ditch in one hour less then his son. Working together, they can do the job in 2\3 hour. How long does it take for ...
Crane A can unload the container ship
Crane A can unload the container ship in 10 hours, and crane B can unload it in 14 hours. Crane A started to unload the ship at noon and was joined by crane B at 2 P....
expressions homework help word problems for 7th grade math students.
Seventh Grade: Expressions Practice Questions
hq - mk = ks + nt solve for k
the graph of the function y =log5
x appears in which quadrants?
a + (4/5) a + b - (10/4)b
nine hundred seven less than twice x
2 + (4 -2)2
(-3) + (-4) - (-5)
Simplify the expression:
What is 6x + 3x?
Three more than eight times a number is equal to 19
(3/2)x = 125
- 4 = 2
12 more than a number t
What is the value of the rational expression below when x is equal to 3?
coefficients of 4e+7
Seven times the product of negative five and a number.
a rectangular shape has a length-to-width ratio of approximately 5 to 3.a designer can use the experssion 1/3(5w) to find the length of such a rectangle with a given width ...
47 more than b
What are careers that use radical equations?
find the value of the coefficient of 1/x in the expansion (2x - 1/x)^5
A polynomial in x has degree 3. The coefficient of x2 is 3 less than the coefficient of x3. Te coefficient of x is three times the coefficient of x2. The remaining coefficient is more than the coefficient of x3. The sum of the coefficients is -4...
expressions homework help questions for 7th grade math students.
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