Inverse Operations
Two-Step Equations
Two-Step Equations
Two-Step Equations (challenging)
Two-Step Equations (challenging)
100
How do we undo division?
Multiplication
100
Solve: 2x + 5 = 17
x = 6
100
Solve: x/4 + 7 = 13
x = 24
100
Solve 3x - 1 = -10
x = -3
100
Solve x/6 - 12 = -9
x = 18
200
What is the inverse operation of subtraction?
Addition
200
Solve: 4m - 17 = 43
m = 15
200
y/8 - 3 = 5
 y = 64
200
Solve: 8m + 12 = -12
m = -3
200
Solve: m/5 + 10 = -1
m = -55
300
What operations do we undo first?
Addition and Subtraction
300
Solve: 9 = 7x + 9
x = 0
300
Solve: 0 = a/6 - 12
a = 72
300
Solve: 2 = -4 + 6b
b = 1
300
Solve: -9 = -14 + t/2
t = 10
400
Make a list of the operations we undo in order. I.e. which do we undo first...last.
(1) Add/Sub (2) Mult/Div (3) Exponents (4) Parenthesis
400
Solve: 108 = 4y - 16
y = 31
400
Solve: 19 + z/2 = 21
z = 4
400
Solve: -18 = -6k + 6
k = 4
400
Solve: 9 + c/-10 = 5
c = -40
500
If I solved a two-step equation using subtraction and division, what were the two original operations?
Addition and Multiplication
500
Solve: 86 = 2 + 4w
w = 21
500
Solve: 30 + w/30 = 30
w = 0
500
Solve: -9 - 2g = -15
g = 3
500
Solve: 0 = -12 + p/-7
p = -84
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