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Ugo [173]
3 years ago
6

Use the Echelon Method 1. Solve x + 3y = 7 3x + 4y = 11

Mathematics
1 answer:
Ludmilka [50]3 years ago
5 0

Answer:

x = 1     y = 2

Step-by-step explanation:

x + 3y = 7

- Subtract x from both sides.

3y = -x + 7

- Divide both sides by 3 to isolate the variable.

y = -1/3x + 7/3

- Plug the value of y into the other equation.

3x + 4(-1/3x + 7/3) = 11

3x - 4/3x + 28/3 = 11

- Add like terms.

5/3x + 28/3 = 11

5/3x = 5/3

x = 1

- Plug the value of x into the equation.

x + 3y = 7

(1) + 3y = 7

3y = 6

y = 2

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4 years ago
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Leno4ka [110]

<u>Answer:</u>

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

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4 0
3 years ago
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katrin2010 [14]

Answer:

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7 0
3 years ago
What is the value for y?<br> Enter your answer in the box.<br> y=
serious [3.7K]

Answer:

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Step-by-step explanation:

Given

The attached triangle

Required

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5 0
3 years ago
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