2y-1)30%+(y+5)20%=15x25%这道题怎么做?3(3-2x)+2(2x-3)=3(2x-3)=4
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![2y-1)30%+(y+5)20%=15x25%这道题怎么做?3(3-2x)+2(2x-3)=3(2x-3)=4](/uploads/image/z/4111401-57-1.jpg?t=2y-1%2930%25%2B%28y%2B5%2920%25%3D15x25%25%E8%BF%99%E9%81%93%E9%A2%98%E6%80%8E%E4%B9%88%E5%81%9A%3F3%EF%BC%883-2x%29%2B2%282x-3%29%3D3%282x-3%29%3D4)
2y-1)30%+(y+5)20%=15x25%这道题怎么做?3(3-2x)+2(2x-3)=3(2x-3)=4
2y-1)30%+(y+5)20%=15x25%这道题怎么做?3(3-2x)+2(2x-3)=3(2x-3)=4
2y-1)30%+(y+5)20%=15x25%这道题怎么做?3(3-2x)+2(2x-3)=3(2x-3)=4
(2y-1)30%+(y+5)20%=15×25%
0.3(2y-1)+0.2(y+5)=15×0.25
0.6y-0.3+0.2y+1=3.75
0.8y+0.7=0.75
0.8y=3.75-0.7
0.8y=3.05
y=3.05÷0.8
y=0.38125
第二题看不懂!