就是0.4x+15=0.5x
0.5x-0.4x=15
0.1x=15
x=150
五分之二x+15=x÷2怎么解
五分之二x+15=x÷2怎么解
數(shù)學人氣:964 ℃時間:2020-06-17 08:50:23
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