Question

Aflati nr a,b,c stiind ca a+b=c;a-b=b;b+c=32

Answer 1

a-b = b ⇒ a=2b
a+b = c  ⇒2b+b = c ⇒c = 3b
b+c = 32 ⇒b+3b = 32 ⇒4b = 32 ⇒ b =8
8+c = 32
c = 32-8
c = 24
a = 2·8
a = 16.