The equations are

(Equation 1)

(Equation 2)

Since , substitute for *y* in the second equation.

(Equation 2)

(Replace )

(Subtract: )

Apply addition property of equality: Add 4*y* to each side.

(Apply additive inverse property: )

(Apply additive identity property: )

(Add: )

Apply division property of equality: Divide each side by 5.

(Cancel common terms)

(Divide: )

Now Substitute 3 for y in either equation to find the value of x.

(Equation 1)

(Replace y by 3 )

(Multiply: )

(Subtract: )

The solution is

The solution is .

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