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tresset_1 [31]
3 years ago
14

Using elimination (combination), which variable will be eliminated first? 5x-y=-21x+y=-3

Mathematics
1 answer:
stiks02 [169]3 years ago
7 0

Answer:

Option B) The variable Y will cancel out first.

Step-by-step explanation:

we have

5x-y=-21 ----> equation A

x+y=-3 ----> equation B

Solve by elimination

Adds equation A and equation B

5x-y=-21

x+y=-3

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

5x+x=-21-3 ----->variable y will be eliminated first

6x=-24

x=-4

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