One-Step Addition
5 + y = 15
y = 10
8 = y - 8
y = 16
4y = 16
y= 4
2k + 5 = 17
k = 6
Inverse means.....
the opposite
16 = 2 + y
y = 14
4 = y - 2
y = 6
y / 9 = 1
y = 9
2a + 11 = 35
a = 12
The first step in solving two-step equations is to....
eliminate (or get rid of) the addition or subtraction by doing the inverse (opposite) operation.
-18 = 7 + y
y = -25
y + (-5) = 16
y = 21
y / 36 = 0
y = 0
2r + 19 =39
r = 10
The second step in solving two-step equations is to....
multiply or divide on both sides.
42 + y = 54
y = 13
-18 = y - 7
y = -11
-14 = 7y
y = -2
3a + 5 =17
a = 4
A letter used to represent an unknown number is a .....
variable.
y + -29 = 5
34
y - 58 = 22
y = 70
5y = 25
y = 5
5m +8 = 23
m = 3
The inverse (opposite) of addition is _____ and the inverse (opposite) of multiplication is ________.
subtraction and division.