algebra 1
posted by kate .
how to simplify and solve
2/5(20x+5)1/2(84x)=38

1. find a common multiple for the denominators of both fractions.
2. combine the fractions together. do not expand the numerator first.
3. cross multiply.
4. expand the terms
5. make x the subject.
6. solve. 
Here is a better way.
Perform the indicated multiplications and combine terms
(2/5)(20x+5)  (1/2)(84x) = 38
8x +2 4 +2x = 38
10x = 40
x = 4