X+25-17=2017 <=> x+25=2024 <=> x=1999
X-42=2017 <=> x=1975
nhìn tui mà học tập
X + 25 -17 = 2017 X - (25 + 17) = 2017
X + 25 = 2017 + 17 X - 42 = 2017
X + 25 = 2024 X = 2017 + 42
X = 2024 - 25 X = 2059
X = 2009
x + 25 - 17 = 2017 x - ( 25 + 17 ) = 2017
x + 25 = 2017 +17 x - 42 = 2017
x + 25 = 2034 x = 2017 + 42
x = 2034 -25 x = 2059
x = 2009
X + 25 - 17 = 2017 X - ( 25 + 17 ) =2017
X + 25 = 2017 + 17 X - 42 = 2017
X + 25 = 2034 X = 2017 + 42
X = 2034 - 25 X = 2059
X = 2009
^ - ^
X + 25 - 17 = 2017
X + 25 = 2017 + 17
X + 25 = 2034
X = 2034 - 25
X = 2009
X - ( 25 + 17 ) = 2017
X - 42 = 2017
X = 2017 + 42
X = 2059
X + 25 - 17 = 2017 X - ( 25 + 17 ) = 2017
X + 25 = 2017 + 17 X - 42 = 2017
X + 25 = 2034 X = 2017 + 42
X = 2034 - 25 X = 2059
X = 2009
NHA !!!!!! ĐÚNG 100% LUÔN !!!!
x+25 = 2017+17
x+25 =2034
x =2034-25
x =2009
x-42 =2017
x =2017+42
x =2059
X +25 -17=2017
x=2009
X-(25+17)=2017
x=2059