Solve the system of equations.
\begin{aligned} & -5x+8y = 0 & -7x-8y = -96 \end{aligned}


−5x+8y=0
−7x−8y=−96


x=x=x, equals
y=y=y, equals

(x, y) = (8, 5)

Step-by-step explanation:

The equations are:

Adding (1) and (2), we get:

⇒ x = 8

Substituting x = 8, in Equation (1), we get:

8y = 5x

⇒ y = 5

Therefore, the root of the equation: (x, y) = (8, 5).

1: The age of Carl's grandfather is a prime number

2: The age of Carl's grandfather has exactly 2 factors

3: the number 5 is a factor of the age of Carl's grandfather

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