Question

Find the missing number so that the equation has infinitely many solutions._x+12+x=–4x+12

Answer 1

-5

Explanation:

-5x + 12 + x = -4x + 12

Combine like terms:

( -5x + x ) + 12 = -4x + 12

-4x + 12 = -4x + 12

Subtract 12 from each side:

-4x = -4x

Ad 4x to each side:

0 = 0

Infinite solutions