解方程组.3x-2y=12 5x-3y=193x-2y=125x-3y=19

解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12 1/2x-2y=-74,x-6y=-12解方程组,x／5-y／2=2,2x+3y=4解方程组 解方程组3x+5(x+y)=2 3y-2(x+y)=4 解方程组:{x+y=3,x-y=5 解方程组 y=2x x+y=3 解方程组3分之x-y=2分之 x+y解方程组3分之x-y=2分之 x+y；2x-5y=7 解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12) 解分式方程组x+y/3-3/x-y=2 x+y/5+2/x-y=5 解方程组{2(x-y)/3 - x+y/4=-1 6(x+y)-41(x-y)=12 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2 解二元一次方程组{x+y/2+x-y/3=6,4(x+y)-2=5(x-y) 解方程组2分之x+y+3分之x-y=6 4(x+y)-5(x-y)=2 解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4 3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组 解方程组 3(x+y)-2(x-y)=9,5(x+y)+2(x-y)=-1 解方程组 (x+y)^2-3(x+y)=54 (x-y)^2-5(x-y)=14 解方程组:{3(x+y)-2(x-y)=9,5(x+y)+2(x-y)=-1} 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27