Question

calcular ab en la igualdad: (a+b;5)=12;a-4)

Answer 1

(a + b , 5) = (12 , a - 4)

igualando las componentes:

a + b = 12  ;     5 = a - 4

a + b = 12 ;      a = 5 + 4

a + b = 12 ;       a = 9

b = 12 - a

b = 12 - 9

b = 3

(a,b) = (9, 3)