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4 years ago

-x- y=-4 -2x+y=-5 How do you it for solving eliminating

Mathematics

1 answer:

Ludmilka [50]4 years ago

7 0

Answer:

x = 3, y = 1

(3,1)

Step-by-step explanation:

Elimination is a method of solving systems where we add or subtract the two equations to "eliminate" one of the variables.

Take a look at our system. We have a -y and a +y. If we added those together, they would cancel!

-x- y=-4

-2x+y=-5 +

--------------

-3x + 0y = -9

It worked! No more y. Solve for x!

-3x = -9

x = 3

Plug x back in to get y.

-x - y = -4

-3 - y = -4

-y = -1

y = 1

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