Vocabulary
Two or more terms that have the same variable.
Like Terms
3x+5x-2
8x-2
4(5x+2)
20x+8
3(2m+4m)
18m
What is the top number called in a fraction?
Numerator
A letter that represents an Unknown Number
Variable
5a- 3a +7a -r
9a -r
-3(2y-6)
-6y+18
-4(3y+2y)
-20y
What does the denominator of a fraction represent?
The whole amount. The number of slices that = a whole pizza
A number being multiplied by a variable
Coefficient
a+a+a+b+b+c+36a
39a +2b +c
10(-4r-2)
-40r+20
6-12(4x+3x)
6-84x
Multiply the fractions
2/3 and 4/5
8/15
Multiplying each term in a sum by a common factor.
Distributive property
5g+8g+7y -12g -7y
g
-1/3( 6m+ 9y)
-2m- 3y
5+7y-2(9y+3)
-11y-1
Divide the fractions
5/4 and 3/2
Keep the first fraction and multiply by reciprocal
5/4 x 2/3= 10/12= 5/6
A number, variable, or a product of a number, variable, and or expression.
Term
4wy- 3q +9wy -8wy +q+q+q
5wy
15 (-8r +0)
-120r
5-7y-5(4y+20)
-27y-95
When we add or subtract fractions what do we need to remember?
Common denominators.