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3 years ago

5x + 2y = 7

Mathematics

2 answers:

MArishka [77]3 years ago

8 0

<h3>Answer:</h3>

(5/7, 12/7) <- I think you meant to type that. Its the first one

<h3>Step-by-step explanation:</h3>

Step 1: Substitute y=x+1 in for y in 5x + 2y = 7

5x + 2(x+1) = 7

Step 2: Solve it

5x + 2x + 2 = 7

7x + 2 = 7

- 2 - 2

7x = 5

--- ---

7 7

x = 5/7

Step 3; Plug x into y=x+1

y = 5/7 + 1

y = 12/7

Natalija [7]3 years ago

5 0

Answer:

{(5/7 , 12/7)}

Step-by-step explanation:

First plug y into one of the x's

5x + 2(x + 1) = 7

Now solve for X

5x + 2x + 2 = 7

Combine like terms

7x + 2 = 7

Subtract 2 from each side

7x = 5

Divide to get x by itself

x = 5/7

Now plug that into the second equation for x

y = 5/7 + 1

now just solve it

y = 12/7 if they want it simplified then it's 1 5/7

Hope this helped!

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Answer:

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Step-by-step explanation:

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4 years ago

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Step-by-step explanation:

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Answer:

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