Question

Resolva as equações.

Answer 1

Resposta:

A)

$6x = 2x + 16 \\ \\ 6x - 2x = 16 \\ \\ 4x = 16 \\ \\ x = \frac{16}{4} \\ \\ x = 4$

B)

$4x - 10 = 2x + 2 \\ \\ 4x - 2x = 2 + 10 \\ \\ 2x = 12 \\ \\ x = \frac{12}{2} \\ \\ x = 6$

C)

$2x + 1 = 4x - 7 \\ \\ 1 + 7 = 4x - 2x \\ \\ 8 = 2x \\ \\ x = \frac{8}{2} \\ \\ x = 4$

D)

$3x - 2 = 4x + 9 \\ \\ - 2 - 9 = 4x - 3x \\ \\ x = - 11$

E)

$5x + 4 = 3x - 2x + 4 \\ \\ 5x - 3x + 2x = 4 - 4 \\ \\ 4x = 0 \\ \\ x = \frac{0}{4} \\ \\ x = 0$

F)

$x + x - 4 = 17 - 2x + 1 \\ \\ x + x + 2x = 17 + 1 + 4 \\ \\ 4x = 22 \\ \\ x = \frac{22}{4} \\ \\ x = 5.5$

G)

$3.4x - 2.6 = x - 0.92 \\ \\ 3.4x - x = - 0.92 + 2.6 \\ \\ 2.4x = 1.68 \\ \\ x = \frac{1.68}{2.4} \\ \\ x = 0.7$

H)

$0.1x + 3x + 0.9x = 14 + 2x \\ \\ 0.1x + 3x + 0.9x - 2x = 14 \\ \\ 2x = 14 \\ \\ x = \frac{14}{2} \\ \\ x = 7$

Espero ter ajudado!