1.3x+3y-z=16 2.3(x+y)-4(x-y)=4 3.0.4x+0.3y=0.7

问题描述:

1.3x+3y-z=16 2.3(x+y)-4(x-y)=4 3.0.4x+0.3y=0.7
x/3=y/4=z/2 x+y/2+x-y/6=1 11x-10y=1
4.3x+y/2=x+2y/3 5.2(x-y)=2y-x+1
0.5x+0.1y=4
正确率要高一点啊

1.3x+3*4x/3-2x/3=16,x=48/19,y=64/19,z=32/192.7y-x=4,2x+y/3=1; y=27/43,x=17/433.11x-10*(0.7-0.4x)/0.3=1,x=1,y=14.y=12x,一个算式是不能解两个未知数的5.2x-2y-2y+x=1,3x-4y=1,5x+y=40,3x-4*(40-5x)=1,17x=161,...