x + 9.45 = 4.20
x = -5.25
10x + 17 = 125
x = 10.8
The number that stands by itself.
Constant
7(x + 3)
7x + 21
2m + 5 + 3m + 8 + 4y
5m + 4y + 13
8 + -6
2
-11.68 + y = 27.99
y = 16.31
-4y - 16 = 14
y = -5
A number sentnece with an equal sign
equation
-6(y - 2)
-6y + 12
4m + 8m + 2y + 6 + 3y
12m + 5y + 6
-98 + -15
-113
-6.5z = -18.32
z = 2.82
t/6 + 7 = 32
t = 234
A letter that represent an unknown value
variable
7(3x + 8)
-6m + -4 - 2m - 8 + 5
-4m + -7
28 - 52
-24
m/-10.17 = 301.95
m = -3,070.83
-x + 9 = 16
x = -7
The number attached to the variable
coefficient
-5(12z + 7x)
-60z - 35x
-9 + 8m + 7 + 2y - 8 - 5m - 6y
3m + -4y + -10
-100/-5
20
-6x = -12
x = 2
m/-8 - 13 = 33
m = -5.75
A number sentence without an equal sign
expression
-4(3x - 9z)
-12x + 36z
-20m - 7 - 12m - 8 + 10 - 2y - 5y
-32m -7y + -5
(-8)(6)
-48