带分数方程怎么解?如:4x+二分之一{46-x}=100急!
人气:182 ℃ 时间:2020-01-30 04:36:17
解答
两边通分去掉分数就行了
4x+二分之一{46-x}=100
两边都乘以2
8x+46-x=200
7x = 154
x = 22唔...请问怎么去掉呀?就是乘以两边所有分母的最小公倍数。左边只有一个分母是2,右边没有分数,所以两边乘以2,再比如2分之1*x+3分之1 = 6分之5吧左边分母有2,3,最小公倍数是6,右边刚好也是6,所以两边就同乘以63x+2=53x=3x=1O(∩_∩)O谢谢
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