Question

Can someone plz help me w/ number 3 with shown work

Answer 1

Answer:

x = 1

y = -3

Step-by-step explanation:

We have the value of x in terms of y already, so our first step will be to plug in y + 4 for x in the first equation. This gives us:

$y + 4 = 2y + 7$

From here, we can just solve for y:

$y + 4 = 2y + 7\\4 = y + 7\\-3 = y$

And now that we know y = -3, we can solve for x using the second equation:

$x = y + 4\\x = -3 + 4\\x = 1$

Lastly, we should just double check our answers using the first equation to see if they work:

$1 = 2 * -3 + 7\\1 = -6 + 7\\1 = 1$

It does!