Question

Solve the equation 2x - 18 = -2y + 12 for x if y is 12. Make sure to first solve the equation for x in terms of y.
X=____

Answer 1

Answer:

x = 3

Step-by-step explanation:

Step 1:  Plug in 12 for y

2x - 18 = -2(12) + 12

Step 2:  Multiply

2x - 18 = -24 + 12

Step 3:  Combine

2x - 18 = -12

Step 4:  Add 18 to both sides

2x - 18 + 18 = -12 + 18

2x = 6

Step 5:  Divide both sides by 2

2x / 2 = 6 / 2

x = 3

Answer:  x = 3

Answer 2

Answer:

3

Step-by-step explanation:

2x - 18 = -2y + 12

If y = 12

Therefore,

2x - 18 = -2 x 12 + 12

2x - 18 = -24 + 12

2x - 18 = -12

Add 18 to both sides

2x - 18 + 18 = -12 + 18

2x = 6

Divide both sides by 3

2x/2 = 6/2

x = 3