X(1+40%)+(60-X)(1+64%)=90

帮忙把X解出来
2025-06-22 22:10:19
推荐回答(1个)
回答1:

X(1+40%)+(60-X)(1+64%)=90
1.4x-1.64x+98.4=90
0.24x=8.4
x=35