问题
解答题
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答案
(1)5.34+x=30.6,
5.34+x-5.34=30.6-5.34, |
(2)x-2.9=17.5,
x-2.9+2.9=17.5+2.9,
x=20.4;
(3)x+5x=36,
6x÷6=36÷6,
x=6;
(4)x÷0.8=4.5,
x÷0.8×0.8=4.5×0.8,
x=3.6.
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(1)5.34+x=30.6,
5.34+x-5.34=30.6-5.34, |
(2)x-2.9=17.5,
x-2.9+2.9=17.5+2.9,
x=20.4;
(3)x+5x=36,
6x÷6=36÷6,
x=6;
(4)x÷0.8=4.5,
x÷0.8×0.8=4.5×0.8,
x=3.6.