Vocabulary
What is an expression?
A math phrase without an equal sign
5x + 7 + 2x + 4
7x + 11
5(3x + 6)
15x + 30
x + 5 = 23
x = 18
3(2x + 6) + 5x
11x + 18
What is an equation?
A math sentence with an equal sign.
8y - 4 - 5y + 7y - 3 + 10
10y + 3
6(5a + 10)
30a + 60
x - 7 + 2 = 42
x = 47
9x − 27 = 54
x = 9
What are like terms?
Terms that have the same variables and raised to the same power.
7m - 3 + 5m + 10 - 2m
10m + 7
9(6p + 7)
54p + 63
y/4 = 0.25
y divided by 4 equals 0.25
y = 1
5(3n + 4) + 6n + 3
21n + 23
What is a coefficient?
It is the number in front of the letter.
15k + 10 - 7k + 4 + 3k
11k + 14
7(8y - 4)
56y - 28
7x + 4 = 25
x = 3
11x + 9 = 86
x = 7
What is a constant?
It is the number all by itself.
10x + 5 + 6x - 6 + 4x
20x - 1
12(4v - 6 - 11c)
48v - 36 - 132c
63 = 7x + 14
x = 7
8(4x - 7) + 2
32x - 54