22b – 7b – 9 = 279
22b – 7b = 279 + 9
15b = 288
b = 19.2
20y + 5y + 1y + 19 = 227
20y + 5y + y = 227 – 19
26y = 208
y = 8
22b – 7b – 9 = 279
22b – 7b = 279 + 9
15b = 288
b = 19.2
20y + 5y + 1y + 19 = 227
20y + 5y + y = 227 – 19
26y = 208
y = 8