x/5+1x-5 x/2+2=3+4x (1):x/5+1x-5 (3) x/2+2=3+4x
问题描述:
x/5+1x-5 x/2+2=3+4x
(1):x/5+1x-5 (3) x/2+2=3+4x
答
(1)x/5+1
4x/5>1
x>5/4
(2) (x+3)/7>x-5
x+3>7x-35
7x-x6x3xx (3) x/2+2x/2-x/3x/6x (4) 6(x-1)>=3+4x
6x-6>=3+4x
6x-4x>=3+6
2x>=9
x>=9/2