解方程:2{1-1/3[x-(1+x)/3]}=3{x/6-1/2[2x-(10-7x)/3]}
解方程: 2 { 1 - 1 / 3 [ x - ( 1 + x ) / 3 ] } = 3 { x / 6 - 1 / 2 [2 x - ( 10 - 7 x ) / 3 ] }
回答对了悬赏20金币
解: 2 { 1 - 1 / 3 [ x - ( 1 + x ) / 3 ] } = 3 { x / 6 - 1 / 2 [2 x - ( 10 - 7 x ) / 3 ] }
2{1-1/3[(2x-1)/3]}=3{x/6-1/2[2x-(10-7x)/3}
2{1-(2x-1)/9}=3{x/6-(13x-10)/6}
2{(10-2x)/9}=3{(10-12x)/6}
(20-4x)/9=5-6x
20-4x=45-54x
50x=25
x=1/2
不懂再问
解: 2 { 1 - 1 / 3 [ x - ( 1 + x ) / 3 ] } = 3 { x / 6 - 1 / 2 [2 x - ( 10 - 7 x ) / 3 ] }
2{1-1/3[(2x-1)/3]}=3{x/6-1/2[2x-(10-7x)/3}
2{1-(2x-1)/9}=3{x/6-(13x-10)/6}
2{(10-2x)/9}=3{(10-12x)/6}
(20-4x)/9=5-6x
20-4x=45-54x
50x=25
x=1/2