题目内容
解方程
5X-0.8×10=12
:
=X:0.8.
5X-0.8×10=12
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(1)5X-0.8×10=12,
5X-8=12,
5x-8+8=12+8,
5x=20,
5x÷5=20÷5,
x=4;
(2)
:
=X:0.8,
X=0.8×
,
X=
,
X÷
=
÷
,
X=
.
5X-8=12,
5x-8+8=12+8,
5x=20,
5x÷5=20÷5,
x=4;
(2)
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| 8 |
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| 8 |
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| 5 |
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X=
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