Question

X+ 3y = 9
2x+ y = -2
Solve for x and y

Answer 1

(-3, 4)

Explanation:

hey there,

< From the first equation, let's find x.

x + 3y = 9

x = 9-3y (I hope you understand how that works )

Next, we can substitute our equation that equals to x into the second equation.

2x + y = -2

2(9-3y) + y = -2 (I substituted "x" in "2x" with (9-3y))

Now, let's solve.

2(9-3y) + y = -2

18 - 6y + y = -2

-5y = -20

y = 4

Now that we have found what y is equal to, we can find x too. In the beginning we found that x = 9-3y so x = 9-3(4) = -3 >

Hope this helped! Feel free to ask anything else.