Adding and Subtracting One-Step Equations

r + 12 = 25

• r = 37

• r = 13

• r = -13

• r = -37

99 = 51 + y

• y = 140

• y = 47

• y = 48

• y = -140

Solve the equation.
15 = n + 7

• n = 22
• n = -8
• n = 8
• n = 7

x + 9 = 12

• x = 21
• x = 3
• x = -20
• x = 12

x + 40 = 56

• x = 16
• x = 96
• x = 15
• x = 10

Solve
4 = 2 + x

• x = 6
• x = 2
• x = 8
• x =-2

Solve
34.7 = y + 5.3

• y = 29.4
• y = 30.4
• y = 28.4
• y = 40

Solve
4.7 = y + 1.34

• y = 6.04
• y = 1.81
• y = 3.46
• y = 3.36

Which equation represents the equation?
Charlie and Anthony together have 340 trading cards. If Charlie has 160 trading cards, how many does Anthony have?

• 160 + c = 340 
• c + 340 = 160
• 160 - c = 340
• c - 340 = 160

y - 18 = 7

• 11
• -11
• 25
• -25