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14 votes
How to solve system of equations y - 4 = x and y = 2x = -2

2 Answers

9 votes

Answer: x = -1 y = -2

Explanation:

Was that supposed to be an equal in the second equation??

User Anisbet
by
4.7k points
10 votes

Hello There today we solve your problem

Since you mean't the equation


y-4=x\\y+2x=-2

we will use that one instead

First off we can substitute
y for
x+4

Now we have an equation


x+4+2x=-2 then simplify


3x+4=-2

do simple algebra and we get that


x=-2

Since we said that
y=x+4 we can plug in our value of
x


y=-2+4\\y=2


\huge\red{\mid{\underline{\overline{\textbf{ANSWER}}}\mid}}


\boxed{x=-2}


\boxed{y=2}

User RammusXu
by
5.6k points