-19 ÷ 7 = -2.7142857142857143
First, you must turn the 12.5% into a decimal, which would then become .125. You then multiply that by the $138.25 and you would get 17.28. Then you just add the $138.25 to the $17.28 where you would then get $155.53 as your answer. Please let me know if I am wrong.
