GR(x) = 17
3a + 5 = 17
3a = 17 - 5
3a = 12
a = 12 ÷ 3
a = 4
GR(y) = 13
2a + b = 13
2(4) + b = 13
8 + b = 13
b = 13 - 8
b = 5
Piden calcular el valor de ´´a + b´´
a + b
4 + 5
9
