2016-04-07 18:04发布
解:3(X-4)-2(4X-3)=12(X-9)3x-12-8x+6=12x-1083x-8x-12x=-108+12-6-17x=-102x=6
按照步骤进行,注意符号,
3(x-4)-2(4x-3)=12(x-9)
3x-12-8x+6=12x-108
17x=108-6
17x=102
x=6
3(X-4) - 2(4X - 3) = 12(X-9)
3X - 12 - 8X + 6 = 12X - 108
12X + 8X - 3X = 108 - 12 + 6
17X = 102
X = 102 ÷ 17
X = 6
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解:3(X-4)-2(4X-3)=12(X-9)
3x-12-8x+6=12x-108
3x-8x-12x=-108+12-6
-17x=-102
x=6
按照步骤进行,注意符号,
3(x-4)-2(4x-3)=12(x-9)
3x-12-8x+6=12x-108
17x=108-6
17x=102
x=6
3(X-4) - 2(4X - 3) = 12(X-9)
3X - 12 - 8X + 6 = 12X - 108
12X + 8X - 3X = 108 - 12 + 6
17X = 102
X = 102 ÷ 17
X = 6
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