Answer:
s+s+s =p
2x+6+2(x-4)+x+3=p
2x+ 6 + 2x-8+x+3=p
93
Step-by-step explanation:
180-25=155
155÷5=31
31×3=93
21
21 should be added in 123 to be a perfect square,i.e,
12^2=144
144-123