Solving Add and Sub Equations

Choose the variable in this equation: x - 5 = 12

• x

• subtract

• 5

• 12

9 = x - 37

• x = 37

• x = 46

• x = -9

• x = -28

56 = x + 21

• x = 35

• x = 77

• x = -21

• x = 56

44 = x + 15

• x = 59

• x = 44

• x = -15

• x = 29

91 = w + 42

• w = 49

• w = 133

• w = -42

• w = 91

45 = w - 30

• w = 15

• w = -30

• w = 75

• w = 20

59 = x + 30

• x = 29

• x = 89

• x = 59

• x = 39

20 = x - 27

• x = -7

• x = -27

• x = 47

• x = 20

x - 56 = 128

• x = 184

• x = 72

• x = 182

• x = 172

n+2=-14-n

• 6

• 8

• -8