x/2+x/3+x/4=65怎么算?
问题描述:
x/2+x/3+x/4=65怎么算?
答
1/2 X +1/3 X+ 1/4 X = 65
(1/2 +1/3 + 1/4) X = 65
(6/12 + 4/12 + 3/12) X= 65
13/12 X = 65
X = 6O