问题
解答题
求未知数x.
x÷18=40 x×30=450 88-x=71.
答案
(1)x÷18=40,
x=40×18,
x=720;
(2)x×30=450,
x=450÷30,
x=15;
(3)88-x=71,
x=88-71,
x=17.
求未知数x.
x÷18=40 x×30=450 88-x=71.
(1)x÷18=40,
x=40×18,
x=720;
(2)x×30=450,
x=450÷30,
x=15;
(3)88-x=71,
x=88-71,
x=17.