题目内容
| 解下列方程. (1)2.5X=3.5 | (2)X÷1.5=0.014 | (3)X-4.8=0.75 | (4)X+0.3=1.8. |
(1)2.5X=3.5,
2.5X÷2.5=3.5÷2.5,
x=1.4;
(2)X÷1.5=0.014,
X÷1.5×1.5=0.014×1.5,
x=0.021;
(3)X-4.8=0.75,
X-4.8+4.8=0.75+4.8,
x=5.55;
(4)X+0.3=1.8,
X+0.3-0.3=1.8-0.3,
x=1.5.
2.5X÷2.5=3.5÷2.5,
x=1.4;
(2)X÷1.5=0.014,
X÷1.5×1.5=0.014×1.5,
x=0.021;
(3)X-4.8=0.75,
X-4.8+4.8=0.75+4.8,
x=5.55;
(4)X+0.3=1.8,
X+0.3-0.3=1.8-0.3,
x=1.5.
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