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The system of equations are .
Equation (1)
Equation (2)
Since , substitute for x in the first equation.
Apply subtraction property of equality: Subtract 2x from each side.
Rearrange the terms using distributive property of addition: a + b = b + a.
(Subtract: )
(Subtract 8 from each side)
(Subtract: )
Apply division property of equality: Divide each side by negative 6.
(Cancel common terms)
Apply subtractionn property of equality: Subtract 2 from each side.
(Apply commutative property of addition: )
(Apply additive inverse property: )
(Apply additive identity property: )
(Subtract: )
(Multiply each side by negative one)
(Product of two same signs is positive)
Now, find the x value by substituting in Equation 2.
(Product of two same signs is positive)
(Add: )
The solution is .
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