Question

Resolva as questões em z

Answer 1

Resposta:

$a)6x = 2x + 16 \\ = > 6x - 2x = 16 \\ = > 4x = 16 \\ x = \frac{16}{4} \\ x = 4 \\ \\ b)2x - 5 = x + 1 \\ 2x - x = 1 + 5 \\ 1x = 6 \\ x = 6 \\ \\ c)2x + 3 = x + 4 \\ = > 2x - x = 4 - 3 \\ = > x = 1 \\ \\ d)5x + 7 = 4x + 10 \\ = > 5x - 4x = 10 - 7 \\ x = 3 \\ \\ e)4x - 10 = 2x + 2 \\ 4x - 2x = 2 + 10 \\ = > x = 12$

$f)4x - 7 = 8x - 2 \\ 4x - 8x = - 2 + 7 \\ - 4x = 5 | \times ( - 1) \\ 4x = - 5 \\ x = \frac{ - 5}{4} \\ \\ g)2x + 1 = 4x - 7 \\ = > 2x - 4x = - 7 - 1 \\ = > - 2x = - 8 | \times ( - 1) \\ = > 2x = 8 \\ x = \frac{8}{2} \\ x = 4 \\ \\ h)9x + 9 + 3x = 15 \\ 9x + 3x = 15 - 9 \\ 12x = - 6 \\ x = \frac{ - 6 \div 6}{12 \div 6} \\ x = - \frac{1}{2}$