Question

Resolva as equações do 1 grau a seguir:

X/4 + 8=9

2/5 - x/3=15

Answer 1

a)

$\frac{x}{4} + 8 = 9 \\ \\ x + 32 = 36 \\ \\ x = 36 - 32 \\ \\ x = 4$

b)

$\frac{2}{5} - \frac{x}{3} = 15 \\ \\ 6 - 5x = 225 \\ \\ - 5x = 225 - 6 \\ \\ - 5x = 219 \\ \\ x = - \frac{219}{5}$