最佳答案:反反复复反反复复反反复复反反复复反反复复反反复复反反复复反反复复反反复复反反复复反反复复反反复复反反复复反反复复反反复复反反复复
最佳答案:脱式计算。408-12×24 (46+28)×60 42×50-1715÷532+105÷5 (108+47)×52 420×(327-238)(4121+23
最佳答案:小数乘除法计算题乘法:5.6×2.93.77×1.80.02×965.22×0.39.99×0.024.67×0.95×2.441.666×6.19.432×0
最佳答案:2X(x-5)=20 x(1-1/4)=12 1/2X(x+6)=18 3X(x-30)=120 5X(30-x)=270x/1.5+2=6 x/2.5=10