问题
解答题
求未知数
|
答案
(1)1.44÷x=2,
1.44÷x×x=2x,
2x=1.44,
2x÷2=1.44÷2,
x=0.72;
(2)2.7×x=8.64,
2.7x÷2.7=8.64÷2.7,
x=3.2;
(3)x÷0.7=3.5,
x÷0.7×0.7=3.5×0.7,
x=2.45;
求未知数
|
(1)1.44÷x=2,
1.44÷x×x=2x,
2x=1.44,
2x÷2=1.44÷2,
x=0.72;
(2)2.7×x=8.64,
2.7x÷2.7=8.64÷2.7,
x=3.2;
(3)x÷0.7=3.5,
x÷0.7×0.7=3.5×0.7,
x=2.45;