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Serga [27]
3 years ago
7

Math help, (again) These are mainly for corrections

Mathematics
2 answers:
dsp733 years ago
7 0

Answer:

D

Step-by-step explanation:

Because if you multiple 7 from 1,2,3,4 you can get all y answers like 7,14,21 and 28. HERE

7*1=7

7*2=14

7*3=21

7*4=28.

e-lub [12.9K]3 years ago
4 0

The answer would be the last option. :)

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Answer:

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Step-by-step explanation:

Solving a system of equations using substitution requires one side to be equal to a variable present in the equation, in this case x or y. We should simplify the equation using elimination before substituting to reduce the chance of error.

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I guarantee you this answer is correct, I worked it out using other methods and graphing prior to submitting this answer.

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