ax-b-(ay/1.17x0.17-b/1.17x0.17)-(ay/1.17x0.17-b/1.17x0.17)x0.12-ay/1.17x0.002=c
b-0.17b/1.17-0.17*0.12b/1.17=ax-0.17ay/1.17-0.17*0.12ay/1.17-c
b=(ax-0.17ay/1.17-0.17*0.12ay/1.17-c)/(1-0.17/1.17-0.17*0.12/1.17)
=(1.17ax-0.17*1.12ay-1.17c)/(1.17-0.17-0.17*0.12)
恩 按下计算器就哦了
找我`~呵呵早上起来做的 才4点啊