Question

4 ( x + 3 ) = 2x + 4 * resolva as questões 2 + 4 - 8 = 8 (6 − ) *

Answer 1

• Primeira:

4x + 12 = 2x + 4

4x - 2x = 4 - 12

2x = -8

x = -8/2

x = -4

• Segunda:

2 + 4 - 8 = -48 - 8x

6 - 8 = -48 - 8x

-2 = -48 - 8x

-2 + 48 = - 8x

46 = -8x

-46/8 = x

-23/4 = x