Question

请问这道解方程怎么做？

Answer 1

（7/12-1/4）÷ 5/12 -（x-2/3）=1/5,
4/12÷5/12 -（x-2/3）=1/5,
4/5 -（x-2/3）=1/5,
x-2/3=3/5,
x=3/5+2/3=(9+10)/15=19/15=1又4/15.

Answer 2

一步一步的算，结果等于19/15

Answer 3

(7/12 - 1/4)/(5/12) - (x - 2/3) = 1/5
因为 (7/12 - 1/4)/(5/12) = (1/3)/(5/12) =4/5 代入上式 成为
4/5 - x + 2/3 = 1/5
x = 4/5 - 1/5 + 2/3 = 19/15

Answer 4

（7/12-1/4）÷ 5/12 -（x-2/3）=1/5,
4/12÷5/12 -（x-2/3）=1/5,
4/5 -（x-2/3）=1/5,
x-2/3=3/5,
x=3/5+2/3
=(9+10)/15
=19/15=1又4/15.