5分之3X乘以18加上5分之2X乘以括弧18减10括弧等于2870怎么解
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5分之3X乘以18加上5分之2X乘以括弧18减10括弧等于2870怎么解
5分之3X乘以18加上5分之2X乘以括弧18减10括弧等于2870怎么解
5分之3X乘以18加上5分之2X乘以括弧18减10括弧等于2870怎么解
5分之3X乘以18加上5分之2X乘以括弧18减10括弧等于2870
3x/5*18+2x/5*(18-10)=2870
两边同乘以5得:
54x+16x=2870*5
70x=2870*5
x=41*5
x=205
3/5x*18+2/5x*(18-10)=2870
10.8x+3.2x=2870
14x=2870
x=205
3x/5*18+2x/5(18-10)=2870
54x/5+16x/5=2870
70x=2870*5
x=205
(3 / 5)x × 18 + (2 / 5)x × (18 - 10)= 2870
(54 / 5)x + (2 / 5)x × 8 = 2870
(54 / 5)x + (16 / 5)x = 2870
...
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(3 / 5)x × 18 + (2 / 5)x × (18 - 10)= 2870
(54 / 5)x + (2 / 5)x × 8 = 2870
(54 / 5)x + (16 / 5)x = 2870
(70 / 5)x = 2870
14 x = 2870
x = 2870 ÷ 14
x = 205
收起
3x/5 *18+2x/5*(18-10)=2870
54x/5+16x/5=2870
12x=2870
x=239.17
3/5x*18+2/5x*(18-10)=2870
3/5*18x+2/5*18x-2/5*10x=2870
18*(3/5+2/5)x-4x=2870
18x-4x=2870
14x=2870
x=205