Question

3x+4(y+2)=3
2(x+2)+2y=0.

Answer 1

Explicație pas cu pas:

$3x+4(y+2)=3 \\ 2(x+2)+2y=0$

$3x+4y+8=3 \\ 2x+4+2y=0 \ \Big|(:2)$

$3x + 4y = - 5 \\ x + y = - 2\Big|×(-3)$

$3x + 4y = - 5 \\ - 3x - 3y =6$

$4y - 3y = - 5 + 6 \implies y = 1$

$x + 1 = - 2 \implies x = - 3$