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数学
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9x-5x=16的解 还有3x+6x=99 0.5x+1.5x=99
请说清楚点 格式：5+0.8x=13.8 8x=8.8/0.8 x=11
人气：325 ℃ 时间：2020-03-31 22:08:16
解答
9x-5x=16
4x=16
x=4
3x+6x=99
9x=99
x=11
0.5x+1.5x=99
2x=99
x=49.5
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