Identificar la ecuación
la mitad de la edad de jorge equivale a la edad de marcela ; disminuida en 15años; por otro lado la suma de las edades de jorge y marcela es de 63 años cumplidos

The equations in the procedure

Jorge's age is 32 and Marcela's age is 31

Step-by-step explanation:

The question in English

Identify the equation

Half of the age of Jorge is equivalent to the age of Marcela decreased by 15 years; on the other hand the sum of the ages of Jorge and Marcela is 63 years of age.

Let

x ----->Jorge's age

y -----> Marcela's age

we know that

------> equation A

------> equation B

Solve the system of equations by substitution

Substitute equation B in equation A and solve for y

Find the value of x

therefore

Jorge's age is 32 and Marcela's age is 31

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

need more info

step-by-step explanation: