I need a lot of help with this

Question

The measure of one angle is thirteen less than five times the measure of another angle. The sum of the measures of two angles equals 140 degrees. Determine each angle. 

 

   I really need help with this because I tried this on my own and it just didnt look right

Answer 1

A = 5B -13

A+B = 140

A= 140-B

140-B = 5B-13

6B = 153

B = 153/6 = 25.5 degrees

A = 140-25.5 = 114.5 degrees

114.5 =5(25.5)-13 = 114.5

the angles are 25.5 and 114.5 degrees