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2 years ago

Which of the following equations shows how substitution can be used to solve

Mathematics

1 answer:

maxonik [38]2 years ago

3 0

Answer: Choice B)

2x+5(2x+3) = 3

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Reasoning:

We start with the second equation 2x+5y = 3

Since y = 2x+3 from the first equation, we can replace every copy of y with (2x+3). This replacement is valid because y and 2x+3 are the same.

So that's how we go from 2x+5y = 3 to 2x+5(2x+3) = 3

This replacement is done to get rid of the y variable, and it allows us to solve for x later on.

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1 year ago

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2 years ago

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faltersainse [42]

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