解方程组3x+2y=8 ①和 5x-4y=6 ②.
解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1
解方程组x:y=2:3和5x+3y=38 3y+x/y=8和9y-2x/y=9
解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3
解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4
解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2
解方程组:x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
解方程组{5x+2y=6 ① 2x+5y=8 ②
解方程组(x/2-y/5=4①,x/7-y/15=3②)
解方程组X+Y除以2+X—Y除以3=6和4(X+Y)—5(X—Y)=2
解方程组(X+Y)/2+(X—Y)/3=6和4(X+Y)-5(X-Y)=2
解方程组{3x+2y=8 5x-4y=6 加减消元法.
解方程组6/x-7/y=40和2/x-5/y=8