3 1 x + 3 1 ( 2 x − 15 ) = 3 2 1 3 1 x + 3 1 ( 2 x − 15 ) = 2 7 ∣ M u lt i pl y b y 6 2 x + 2 ( 2 x − 15 ) = 21 2 x + 4 x − 30 = 21 6 x − 30 = 21 ∣ A dd 30 6 x = 51 ∣ D i v i d e b y 6 x = 6 51 = 8 2 1
The solution to the equation is x = 6 51 , which can also be expressed as the mixed number 8 2 1 .
;