Question

Twelve is decreased by twice a number is the same as 8 times the number plus 32. What is the number?

Answer 1

x = -2

Explanation:

Let the number be x

12 -2x = 8x +32

Add 2x to each side

12 -2x +2x = 8x+32+2x

12 = 10x+32

Subtract 32 from each side

12-32 = 10x+32-32

-20 =10x

Divide each side by 10

-20/10=10x/10

-2 =x