1 year ago

Solve system of equation using elimination by addition. Will give brainliest!!

Mathematics

1 answer:

emmasim [6.3K]1 year ago

8 0

Answer:

$x = 2, y = -1$

Step-by-step explanation:

We can add the 2 equations together to solve for y.

$(-3x + 5y) + (3x + 7y) = (-11) + (-1)\\-3x + 3x + 5y + 7y = -11 -1\\12y = -12\\y = -1$

Now we can solve for x by substituting y in one of the original equations.

$3x + 7y = -1\\3x + 7(-1) = -1\\3x - 7 = -1\\3x = 6\\x = 2$

Those are the answers

- Kan Academy Advanced

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