How do you solve the system of equations #y+2x=3# and #-y+4=-x#?
1 Answer
Dec 2, 2016
Explanation:
In the first equation, we can determine a value for
Subtract
In the second equation, substitute
Open the brackets and simplify. The product of two negatives is a positive, and that of a negative and positive is a negative.
Add
Subtract
Divide both sides by
In the first equation, substitute
Open the brackets and simplify.
Add