题目内容
解方程
| 7x-25=13.5 |
|
(1)
x+
x=63,
x=63,
x÷
=63÷
,
x=54;
(2)7x-25=13.5,
7x-25+25=13.5+25,
7x÷7=38.5÷7,
x=5.5;
(3)
=
,
1.2x=7.5×0.4,
1.2x÷1.2=3÷1.2,
x=2.5.
| 2 |
| 3 |
| 1 |
| 2 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
x=54;
(2)7x-25=13.5,
7x-25+25=13.5+25,
7x÷7=38.5÷7,
x=5.5;
(3)
| 1.2 |
| 7.5 |
| 0.4 |
| x |
1.2x=7.5×0.4,
1.2x÷1.2=3÷1.2,
x=2.5.
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