Solving one-step equations add/subtract

 $87\ =\ y\ +\ 43$  

• y = 43

• y = -87

• y = 44

• y = 130

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

g - 31 = 22

• g = -31

• g = 9

• g = 53

• g = -9

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