列式计算(36×2/3+36×2/3)÷48/49=48×49/48=4929.4÷(4/5-0.9×2/3)=29.4÷(0.8-0.6)=29.4÷0.2=14717÷(2/3+3/4)=17÷17/12=12(8-1/3÷4/9)×1.8=(8-3/4)×1.8=7.25×1.8=13.05
太乱了,手机打上来的字吗?