one step algebra equation

What is the solution of the equation? 
8 = x + 1

• 9
• 7
• 6
• 8

y - 33 = 147

• y = 114
• y = 177
• y = 180
• Answer not Given

r + 12 = 25

• 37
• 13
• 300
• Answer not Given

y - 14 = 66

• 80
• 52
• 79
• Answer Not Given

y + 51 = 99

• 140
• 150
• 48
• Answer not Given

a - 27 = 41

• a = 68
• a = -41/27
• a = -1107
• a = 14

• Plus 8 on both sides

• Plus 5 on both sides

• Minus 8 on both sides

• Minus 5 on both sides

• Plus 13 on both sides

• Plus 7 on both sides

• Minus 13 on both sides

• Minus 7 on both sides

s - 22 = 50

• s = 28
• s = 20
• s = 72
• s = 75

What is the inverse operation of subtraction?

• addition

• subtraction

• multiplication

• division