Question

1-Resolva as equações:
a)3×=48
b)5×-1=29
c)8×-12=72
d)5.(6-y)+10y=40

Answer 1

Explicação passo-a-passo:

$a)3x = 48 \\ x = \frac{48}{3} \\ x = 16 \\ b)5x - 1 = 29 \\ 5x = 29 + 1 \\ x = \frac{30}{5} = 6$

$c)8x - 12 = 72 \\ 8x = 72 + 12 \\ x = \frac{84}{8} x = 10. \\ d)5 \times (6 - y) + 10y = 40 \\ 30 - 5y + 10y = 40 \\ 5y = 40 - 30 \\ y = \frac{10}{5} = 2$