Question

a+8=b
b+9=c
a+b+c=37
a=
b=
c=

Answer 1

a+8=b  a=b-8
b+9=c    b=c-9
si inlocuim  c-9-8+c-9+c=37
3c-26=37
3c=63
c=21
b=21-9=12
a=12-8=4

Answer 2

a + 8 = b
b + 9 = c
a + b + c = 37
a = b - 8
c = b - 9
b - 8 + b + b - 9 = 37
3b = 37 + 8 + 9
3b = 54
b = 54 : 3
b = 18
a = b - 8
a = 18 - 8
a = 10
c = b - 9
c = 18 - 9
c = 9
numerele sunt
a = 10 , b = 18 , c = 9