问题
解答题
求未知数X.
27.2÷X=6.8
X×0.7=17.5.
答案
(1)27.2÷x=6.8
27.2÷x×x=6.8×x
27.2÷6.8=6.8x÷6.8
x=4;
(2)x×0.7=17.5
x×0.7÷0.7=17.5÷0.7
x=25.
求未知数X.
27.2÷X=6.8
X×0.7=17.5.
(1)27.2÷x=6.8
27.2÷x×x=6.8×x
27.2÷6.8=6.8x÷6.8
x=4;
(2)x×0.7=17.5
x×0.7÷0.7=17.5÷0.7
x=25.