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数学
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合并同类项:4-x+4x-7,x-5x+5/3x-1/2
人气:328 ℃ 时间:2019-11-17 05:11:52
解答
=(4-7)+(4x-x)
=3x-3
=(x-5x+5x/3)-1/2
=(-4x+5x/3)-1/2
=-7x/5-1/2
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去括号并合并同类项(1)3x-2(x+7)+2(2x+5) (2)(4x-3y)-[-(3y-x)+(x-y)]-5x
(5x+2x-3-4x^3)-(-x+3x^3-x^2) 合并同类项
2-(3x-7)/4=(x+17)/5 2.4-(x-4)/2=3/5x 4/3(1/4x-1)-2-x=2
解下列方程: (1)-4x+6=5x-3 (2)1-3x=7x+4 (3)-2x-7x+5=3x-x-6 (4)-3x+3=1-x-4x (5)5x-3x+7=1-3x (6)-x+2+3x=4-2x.
2-(3x-7)/4=(x+17)/5...这是第一个2点4-(x-4)/2=3/5x第2个4/3(1/4x-1)-2-x=2第三个
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what does she liketo have?有没有对
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