5×=1.5 x=1.5÷5 x=0.3 检验：0.3 x5=1.5 X÷1.1=3 x=3x1.1 x=3.3检验：3.3÷1.1=3
x=0.3。用1.5除以5=0.3。0.3✖️1.1=3.3
5x=1.5x=1.5÷5x=0.3
5x=1.5 x=1.5除5 x=0.3
