(200+20*а)/6=60

Question

(200+20*а)/6=60

Answer 1

200+20*а=60*6, 200+20*а=360, 20а=360-200, 20а=160, а=160/20, а=8

Answer 2

(200 + 20*а)/6 = 60; a = (360 - 200)/20; a = 8.