Question

谁能帮我解下这些题?①{3x-y=2 {3x=11-2y ②{x+1=5(y+2) {3(2x-5)-4(3y+4)=5

Answer 1

1.x=5/3,y=3;

2.x=4,y=-1;

3.x=60/17,y=12/17