65 - 5 . ( x + 2 ) = 15
5 . ( x + 2 ) = 65 - 15
5 . ( x + 2 ) = 50
( x + 2 ) = 50 : 5
x + 2 = 10
x = 8
Vậy x = 8
\(65-5.\left(x+2\right)=15\)
\(5\left(x+2\right)=50\)
\(x+2=10\)
\(x=8\)
65 - 5(x + 2) = 15
=> 5(x + 2) = 50
=> 5x + 10 = 50
=> 5x = 40
=> x = 8
vậy_
65 - 5 . ( x + 2 ) = 15
5 . ( x + 2 ) = 65 - 15
5 . ( x + 2 ) = 50
x + 2 = 50 : 5
x + 2 = 10
x = 10 - 2
x = 8
Vậy x = 8