Question

A college student completed some courses worth 4 credits and some courses worth 5 credits. The student earned a total of 74 credits after completing 17 courses. How many courses worth 4 credits did the student complete?

please help me​

Answer 1

4x+5y=74

six 5 credit cources and 11 four credit cources

if u substitute in the value its correct

4(11)+5(6)= 44+30 which is 74

and 11 plus 6 is 17 cources so there you go!