Answer:
pepperoni slices : 72
cheese slices: 55
Explanation:
p is the number of pepperoni slices
c is the number of cheese slices
so p + c = 127 => c = 127 - p
3p + 2c = 326
3p + 2(127 - p) = 326
3p + 254 - 2p = 326
p = 326 - 254 = 72
c = 127 - 72 = 55