3 years ago

What is the solution to the system of equations 2x-5y=-5 and x+2y=11?

1 answer:

4 0

Let's eliminate x in the system

<span>
2x-5y=-5
x+2y=11

To do this, mult. the 2nd eqn by -2:

</span> 2x-5y=-5
-x-4y=-22
---------------
-9y= -27. This yields y = 3.

Now subst. 3 for y in either of the original equations to determine x.

Write your answer as an ordered pair: ( ? , 3).

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