Answer:
a=28 b=87
Step-by-step explanation:
a-10=18 a=10+18 a=28 b+16=103 b=103-16 b=87
(4x+y)+5
20x+5y
20x+5y+0
third term is zero
a is the beggining number and n is the amount of times needed to do this. if is 17 you would need to subtract 7 from the originol number 12 (a) that many times.