题目内容
| 解方程. 4x-3×5=60 | x-
| 5x-20%x=19.2 | x×(
|
(1)4x-3×5=60,
4x-15+15=60+15,
4x÷4=75÷4,
x=18.75;
(2)x-
x=0.8,
x=0.8,
x÷
=0.8÷
,
x=1.2;
(3)5x-20%x=19.2,
4.8x=19.2,
4.8x÷4.8=19.2÷4.8,
x=4;
(4)x×(
+
)=27,
x=27,
x÷
=27÷
,
x=60.
4x-15+15=60+15,
4x÷4=75÷4,
x=18.75;
(2)x-
| 1 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
x=1.2;
(3)5x-20%x=19.2,
4.8x=19.2,
4.8x÷4.8=19.2÷4.8,
x=4;
(4)x×(
| 1 |
| 5 |
| 1 |
| 4 |
| 9 |
| 20 |
| 9 |
| 20 |
| 9 |
| 20 |
| 9 |
| 20 |
x=60.
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