题目内容
解方程.
9×1.8-10x=1.8
x-
x=
×
.
9×1.8-10x=1.8
x-
1 |
5 |
4 |
3 |
3 |
10 |
(1)9×1.8-10x=1.8,
16.2-10x=1.8,
16.2-10x+10x=1.8+10x,
10x+1.8=16.2,
10x+1.8-1.8=16.2-1.8,
10x=14.4,
10x÷10=14.4÷10,
x=1.44;
(2)x-
1 |
5 |
4 |
3 |
3 |
10 |
4 |
5 |
2 |
5 |
4 |
5 |
4 |
5 |
2 |
5 |
4 |
5 |
x=
1 |
2 |
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