Answer:
r=7 q=6
Explanation:
15q - 4r = 62
15 × 6 - 4 × 7 = 62
90 - 28 = 62
5q + 8r = 86
5 × 6 + 8 × 7 = 86
30 + 56 = 86
Hope this helps! If you have any more questions or need more explanation please leave a comment down below and I will reply ASAP. Good luck!