Math Algebra
posted by bob .
kassie an kesya are dividing $39 into two parts in order that the sum of 2/3 of one part and 3/4 of the other part is $28. What are the parts?

let one part be x, then the other part would be 39x
now translate "the sum of 2/3 of one part and 3/4 of the other part is $28 " into Math.
(2/3)x + (3/4)(39x) = 28 and solve