Linear Equations Both Sides

• a = - 2

• a = 2

• a = 5

• a = -1

• x = 15

• x = 3

• x = -3

• no solution

• Add 7 to both sides

• Divide both sides by -7

• Divide both sides by 7

• Subtract 7 from both sides

• Add 1 to both sides
  

• Collect the numbers to the right

• Divide 36 by 18

• Subtract 1 from both sides

Mathematical Equivalence

ON

Mathematical Equivalence

ON

3x + 10 + 2x = 2 (x + 8)

5x + 10 = 2x + 16

What is the next step? Drag the correct part under the equation. Be sure to put the one labeled left on the left.

d

a

-2x (left side)

/2x (right side)

-2x (right side)

/2x (left side)

• x = -7

• x = 7

• x = 14

• x = -14

Solve the equation:
3(x - 1) = 2x + 9

• x = 12

• no solution

• x = 10

• x = 6

Solve the equation for the variable

• 4

• -10

• 1

• -1