问题
解答题
求未知数x有值.
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答案
(1)5x-1.5×2.5=3.25,
5x-3.75+3.75=3.25+3.75,
5x÷5=7÷5,
x=1.4;
(2)(x-3):2.5=4:5,
5x-15+15=10+15,
5x÷5=25÷5,
x=5.
求未知数x有值.
|
(1)5x-1.5×2.5=3.25,
5x-3.75+3.75=3.25+3.75,
5x÷5=7÷5,
x=1.4;
(2)(x-3):2.5=4:5,
5x-15+15=10+15,
5x÷5=25÷5,
x=5.