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Activity 2 Solving Equations

Learn how to solve addition and subtraction equations.

Use subtraction to solve an Use addition to solve a
addition equation. subtraction equation.

a 4=7 Subtract b 6=5 Add 6 to
a 4 4=7 4 4 from both b 6 6=5 6 both sides.
sides.
a=3 b = 11

The two sides remain equal when the same number is subtracted
from or added to both sides of an equation.

1 . Solve the equation and check your answer.

a. p 20 = 50 b. y 4 = 30

Solve: p 20 = 50 Solve: y 4 = 30
p 20 20 = 50 20 y 4 4 = 30 4
p = 30 y = 34

Check: p 20 = 50 Check: y 4 = 30
30 20 = 50 34 4 = 30
50 = 50 30 = 30

c. 13 + m = 27 d. n 14 = 22

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