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4. What’s the answer to this question please

4. What’s the answer to this question please-example-1
User Catarina
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5 votes

Answer:

The answer is D

(x=3, y=8)

Explanation:

We want to reduce as many variable as we can so, we can obtain the value for the remaining variables.

Therefore, the first equation y=x+5 multiply it -2., you have -2y=-2x-10 and sum it to the second (2y-x=13), you will obtain the following: -x=13-2x-10.

You have x=3.

If you substitute x=3 in the first equation, you have y=8

User Temeka
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