题目内容
解方程或比例:
4X-1.2×3=2
﹕
=X﹕
3X+80%X=4.56.
4X-1.2×3=2
| 1 |
| 4 |
| 1 |
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| 10 |
3X+80%X=4.56.
(1)4x-1.2×3=2,
4x-3.6+3.6=2+3.6,
4x÷4=5.6÷4,
x=1.4;
(2)
:
=x:
,
x=
×
,
x÷
=
÷
,
x=
;
(3)3x+80%x=4.56,
3.8x÷3.8=4.56÷3.8,
x=1.2.
4x-3.6+3.6=2+3.6,
4x÷4=5.6÷4,
x=1.4;
(2)
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| 1 |
| 8 |
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| 10 |
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| 8 |
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| 4 |
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| 40 |
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x=
| 1 |
| 5 |
(3)3x+80%x=4.56,
3.8x÷3.8=4.56÷3.8,
x=1.2.
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