解方程组,过程要具体,不用算出结果来,15000+5000y=62500x,24000+...

问题描述:

解方程组,过程要具体,不用算出结果来,15000+5000y=62500x,24000+...
解方程组,过程要具体,不用算出结果来,15000+5000y=62500x,24000+2500x=80000y,

2500x=80000y-2400062500x=2.5(2500X)15000=2.5(8000Y-24000)-5000Y15000=20000y-60000-5000y15000=15000y-6000015000y=75000y=5把y=5带入得15000+25000=62500xx=0.64