解方程 (1-1/3)x=60-x-15

问题描述:

解方程 (1-1/3)x=60-x-15

(1-1/3)x=60-x-15
(2/3)x=45-x
(2/3)x+x=45
(2/3+1)x=45
(5/3)x=45
x=45÷5/3
x=27