Can someone help me with the question in the image. if correct i will mark as brainliest

Answer:
a= 90.65
Step-by-step explanation:
4a+17.5+2.2-18.8-3.5=360
4a-2.6=360
4a=362.6
4a/4=362.6/4
a=90.65
Answer: a=21
Step-by-step explanation:
a - 3.5 = 17.5
a = 17.5 + 3.5 = 21