Vocabulary
A letter that takes the place of an unknown number.
variable
Ten more than twice a number
10 + 2n
2n + 10
𝟏𝟑𝒂 − 𝟖𝒃 + 𝒄 − 𝟕𝒂 + 𝟓𝒃
6a - 3b + c
−(5m +1)
-5m - 1
18y − 12
6(3y - 2)
The number being multiplied by a variable in an expression
coefficient
The difference between 4 times a number and 1
4n - 1
Larry wrote this expression on the board:
16p + 5q + 12.5p + 6q
Evaluate the expression when p = 7 and q = -2
199.5 - 22
177.5
-3(x + 5) + 3(-x + 5)
-6x
77c - 35
7(11c - 5)
The number in an expression that has a fixed value. A number by itself.
constant
Esteban has $300 in his bank account and adds $75 each week.
300 + 75w
9(c −1) + 7c
16c - 9
4(3n + 2) − 2(9n − 7)
12n + 8 -18n + 14
-6n + 22
-4d + 36 - 16c
When two expressions have the same value but may be written in different ways.
equivalent
A video game is on sale for half the regular price
1/2g
g/2
- x - x - x - x
-4x
𝟏/𝟒 (𝟏𝟐𝒙 − 𝟒)
3x - 1
Simplify & factor:
9(4p − 2) − 4(3p − 2)
36p - 18 - 12p + 8
24p - 10
2(12p - 5)
The process that describes simplifying “2𝑥 + 3𝑥” to “5𝑥”
combine like terms
Mark had $50 in his wallet. He did his chores and made m amount of money. He also sold his bike and made two times the amount he did from his chores.
50 + m + 2m
50 + 3m
3m + 50
What is the difference of (−𝑥 + 4) and (𝑥 − 1)?
-2x + 5
−8y − 2(5y + 9)
-18y - 18
Simplify & factor:
(−28 +17v) − (2v −19)
15v - 9
3(5v -3)