The equation is .
According to multiplication property of equality:
\For any number a, b and c, If a = b then ac = bc.
\ (Multiply each side by 3)
(Cancel common terms)
(Multiply:
)
According to division property of equality:
\For any number a, b and c, If a = b then .
(Divide each sides by 2)
(Cancel common factors)
b = 39 (Divide: )
Check:
\To check the solution, substitute b = 39 in original equation.
\ (Multiply:
)
(Divide:
)
Compare the values, the equation is true.
\The value of b = 39.