The equations are and
.
Equation (1)
Equation (2)
Since , substitute
for x in the first equation.
(Apply distributive property:
)
(Multiply:
)
(Add:
)
According to 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 .