解方程组4x+7y=37①6x+3y②
解方程组4x+7y=37①6x+3y②
解方程组(x/2-y/5=4①,x/7-y/15=3②)
1.解方程组 2x+6y=3① 3x+15y+2z=5② 4x-9y+4z=7③ 2.求方程组5x+3y=-16①6x-
解方程组:①3x-7y=1,5x-4y=17②23x+17y=63,17x+23y=57
解方程组(x+y)/4-(2x-y)/3=-1 ① 6(x+y)-4(2x-y)=16 ②
解方程组X+Y/2=3X-2Y=10+6X+Y/4
解方程组:2x+3y+z=3①,7x+6y+z=4②,x+y+z=7/3③.
解方程组:y=2x-7① 3x+2y+4z=2② x+3y-6z=-10③
解二元一次方程组:{5(x+y)+3(x-y)=2{7(x+y)-3(x-y)=-6
解方程组24/(x+y) +24/(x-y) = 7/3 ,8/(x+y) +18/(x-y) = 4/3
2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组
解方程组﹛2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51