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数学
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百分数的解方程
15%x+35=65
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18-150%x=6
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﹙1+25%﹚x=56
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x-30%x=4.97
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人气:280 ℃ 时间:2020-03-28 20:11:07
解答
1:15%x+35=65
0.15x=65-35
0.15x=30
x=200
2:18-150%x=6
18-6=1.5x
12=1.5x
8=x
3:﹙1+25%﹚x=56
1.25x=56
x=44.8
4:x-30%x=4.97
(1-30%)x=4.97
0.7x=4.97
x=7.1
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