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32 votes
32 votes
Pls help me and show world pls :)

Pls help me and show world pls :)-example-1
User Alexei Tenitski
by
2.9k points

1 Answer

7 votes
7 votes

Answer:

add equation 2 from equation 3

Explanation:

So, we are given equations 1, 2, and 3, but for this problem, we need to use just 2 and 3.

4x - 2y = -16

x + 2y = 6

In order to eliminate one variable, then we need to find whether there are two numbers that have the same coefficient (or multiply one by a number to make it) so that if you add/subtract two numbers, it gives you 0. So, in this problem, if you add

2y to -2y, then it gives you 0, which means that y would be canceled out.

So, the answer is the first option.

Feel free to ask any questions about clarity! (this explanation is pretty bad, but I can explain it more if you want) :D

User Choroba
by
2.6k points
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