当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少3当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少解方程:1/2(x+40)+1/5(x-10)=0

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当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少3当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少解方程:1/2(x+40)+1/5(x-10)=0
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当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少3当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少解方程:1/2(x+40)+1/5(x-10)=0
当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少3
当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少
解方程:1/2(x+40)+1/5(x-10)=0

当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少3当m等于什么数时,代数式9m-3/4-m/3比m/2-m-4/6值少解方程:1/2(x+40)+1/5(x-10)=0
(x+40)与(x-10)是在分母部分么?
如果是,解法如下
1/2(x+40)=-1/5(x-10)
2(x+40)=-5(x-10)
7x=130
x=130/7
如果否,解法如下
1/2(x+40)=-1/5(x-10)
5(x+40)=-2(x-10)
7x=-220
x=-220/7