(4x+20)/4-(6x-20)/5=2
问题描述:
(4x+20)/4-(6x-20)/5=2
答
x+5-6x/5+4=2
x/5=7
x=35
答
(4x+20)/4-(6x-20)/5=2
拆括号x+5-6/5 x +4=2
合并-1/5 x=-7
x=35