How to solve Expressions

Solve an algebraic expression with fractions.

(x + 3) / 6 = 2/3. First, cross multiply to get rid of the fraction ...

(x + 3) x 3 = 2 x 6 =

3x + 9 = 12. Now, combine like terms ...

3x + 9 - 9 = 12 - 9 =

3x = 3. Isolate the variable, x, by dividing both sides by 3 and you've got your answer.

3x/3 = 3/3 =

x = 1.