题目内容
解方程.
| 1.6X=6.4 | 7x+5x=24 | X+3.2=4.6. |
(1)1.6X=6.4,
1.6X÷1.6=6.4÷1.6,
X=4;
(2)7x+5x=24,
12x=24,
12x÷12=24÷12,
x=2;
(3)X+3.2=4.6,
X+3.2-3.2=4.6-3.2,
X=1.4.
1.6X÷1.6=6.4÷1.6,
X=4;
(2)7x+5x=24,
12x=24,
12x÷12=24÷12,
x=2;
(3)X+3.2=4.6,
X+3.2-3.2=4.6-3.2,
X=1.4.
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