What is the solution for x + 9 = 21

• 10
• 12
• 11
• 13

m+13=21

• m=34

• m=8

• m=273

• m=6

7 + g = 11

• g = 4

• g = -4

• g = 18

• g = -18

What is the inverse (opposite) of addition?

• subtraction

• multiplication

• division

• addition

What is the inverse (opposite) of multiplication?

• multiplication

• addition

• division

• subtraction

4x = 72

• x = 18

• x = 68

• x = 288

• x = 62

How would you isolate the variable (get X alone) in the following equation: -4x = 16?

• Add -4 on both sides

• Subtract -4 on both sides

• Multiply by -4 on both sides

• Divide by -4 on both sides

Solve: -11x = 55

• x = -5

• x = 5

• x = 44

• x = -44

4x + 7 = 23

• x = 16
• x = 4
• x = 9
• x = 12

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.