Question

12 + x = 0.80(x + 20)
Solve the linear equation

Answer 1

x = 20

Explanation:

12 + x = 0.80(x + 20)

Distribute the 0.80 on the right side.

12 + x = 0.8x + 16

Subtract 0.8x from both sides.

12 + 0.2x = 16

Subtract 12 from both sides.

0.2x = 4

Divide both sides by 0.2.

x = 20

Answer 2

20

Explanation:

12+x=0.8(x+20)

Divide both sides by 0.8:

15+1.25x=x+20

Subtract x from both sides:

0.25x+15=20

Subtract 15 from both sides:

0.25x=5

Multiply both sides by 4:

x=20. Hope this helps!