Question

$\frac{3( \times - 7)}{2} = \frac{ \times - 6}{1}$
Podem me ajudar?

Answer 1

3. (x-7) = 3x-21

$\frac{3x-21}{2} = \frac{x-6}{1}$
regra do X

(3x-21).1 = 2.(x-6)

3x-21=2x-12
x=9