题目内容
解方程:
X+X=98;
12:
=X:
;
60%X-18=72.
3 |
4 |
12:
3 |
5 |
1 |
2 |
60%X-18=72.
3 |
4 |
7 |
4 |
7 |
4 |
7 |
4 |
7 |
4 |
x=56;
(2)12:
3 |
5 |
1 |
2 |
3 |
5 |
1 |
2 |
3 |
5 |
3 |
5 |
3 |
5 |
3 |
5 |
x=10;
(3)60%X-18=72,
0.6x-18+18=72+18,
0.6x=90,
0.6x÷0.6=90÷0.6,
x=150.
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