5/7÷2/3+2/5×3/2=5/7x3/2+2/5×3/2=(5/7+2/5)x3/2=39/25x3/2=117/50希望能帮到你!
5/7÷2/3+2/5×3/2=5/7x3/2+3/5=15/14+3/5=75/70+42/70=117/70