11× 38.5% = X × 36% + (X - 3)× 35% +(11-2X+3)×40%解方程,急
问题描述:
11× 38.5% = X × 36% + (X - 3)× 35% +(11-2X+3)×40%解方程,急
答
11× 38.5% = X × 36% + (X - 3)× 35% +(11-2X+3)×40%解方程,急