Question

Resolva as equações de 1 grau: a) 5\x=12\8 b)3\9=12\x c) 8\3=8\x

Answer 1

Resposta:

$a)5.x = 12.8 \\ 5x = 96 \\ x = \frac{96}{5} \\ x = 19.2 \\ \\ b)3.9 = 12.x \\ 27 = 12x \\ \frac{27}{12} = x \\ x = 2.25 \\ \\ c)8.3 = 8.x \\ 24 = 8x \\ \frac{24}{8} = x \\ x = 3$