連立方程式13(かっこ)

連立方程式を解け。

{3x+y=-52(x+3y)=-14 {3(4x-2y)=x+92x-3y=-6 {-2x+3y=135(3x+4)=9y+17 {x=3y-73(x+2y)=5y-11 {-(3x+2y)=y+21y=5x+17 {-(3x+y)=-112x+15=3(x+2y) {-5(3x-4)=y-152x-5y-11=4(x-2y) {4(3x-4y)=5(2x-y)+32x+3=x+2y+1 {4(3x-y)=5x-13y+6x-y=-(2x+8y)-10 {7x=2(-3x+8y)+6-4(2x+3y)=40 {4x-3y=2(x+y-5)-(2x-7y)=14 {2(2x-3y)=-102y-7=-(3x-4y)+8