题目内容
求未知数X的值.
8×3.2+3X=44.8
7
:X=1
:1.5.
8×3.2+3X=44.8
7
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(1)8×3.2+3x=44.8,
25.6+3x=44.8,
25.6+3x-25.6=44.8-25.6,
3x=19.2,
3x÷3=19.2÷3,
x=6.4;
(2)7
:x=1
:1.5,
1
x=7
×1.5,
1
x=11.25,
1
x÷1
=11.25÷1
,
x=7.5.
25.6+3x=44.8,
25.6+3x-25.6=44.8-25.6,
3x=19.2,
3x÷3=19.2÷3,
x=6.4;
(2)7
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| 2 |
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| 2 |
1
| 1 |
| 2 |
| 1 |
| 2 |
1
| 1 |
| 2 |
1
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| 2 |
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| 2 |
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| 2 |
x=7.5.
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