Question

d) {2x- y=4
{3x+2y=6​

Answer 1

Resposta:

$2x = 4 + y \\ x = \frac{4 + y}{2} \\ 3 \times \frac{4 + y}{2} = 6 \\ 3 \times 4 + y = 6 \times 2 \\ 12 + y = 12 \\ y = 12 - 12 \\ y = 0 \\ \\ 2x - 0 = 4 \\ 2x = 4 \\ x = 4 \div 2 \\ x = 2$