Question

9afla numerele a b c stiind ca a+a+a=b b+a+a=c c+b+a=180

Answer 1

a+b+c =180

3a =b

b+2a=c => 3a + 2a = c

a + 3a + 5a =180

9a =180

a=20

b=3*20=60

c=5*20=100

:)