Question

联立求解X/2650+Y/2700=0.695X/X+Y=032我需要具体的求解步骤,越详细越好上面的是错误的，正确的是

Answer 1

X/(X+Y)=0.32

X=0.32(X+Y)

0.68X=0.32Y

68X=32Y

17X=8Y

代入X/2650+Y/2700=(2700X+8*331.25Y)/[(2700-50)*2700]=0.695

2700X+331.25*17X=265*27*695

540X+17*66.25X=53*27*695

108X+17*13.25X=53*27*139

10800X+17*1325X=53*27*13900

2160X+17*265X=53*27*2780

432X+17*53X=53*27*556

X=53*27*556/1333

Y=8*53*27*556/1333*17