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Shalnov [3]
3 years ago
11

To solve this system of equations by elimination, what operation could be used to eliminate the x-variable and find the value of

y?
−6x − 4y = 2
−4x − 7y = 2
Mathematics
1 answer:
stepan [7]3 years ago
7 0

Answer:

see explanation

Step-by-step explanation:

Given the 2 equations

- 6x - 4y = 2 → (1)

- 4x - 7y = 2 → (2)

Multiplying (1) by 4 and (2) by - 6 will eliminate the x- term

- 24x - 16y = 8 → (3)

24x + 42y = - 12 → (4)

Add (3) and (4) term by term

26y = - 4 ( divide both sides by  26 )

y = \frac{-4}{26} = - \frac{2}{13}

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Svetlanka [38]

Answer:

b = 14

Step-by-step explanation:

Since both angles are diagonal each other, they are equal to each other.

5b = b + 56

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<u>4b</u> = <u>56</u>

4       4            (divide both sides by 4 to solve for b)

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ivanzaharov [21]
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Between x and 8: x-8

The distance between x and 8: | x-8 |

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2 years ago
1.81 repeating as a fraction
OlgaM077 [116]

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Solve the systems by the addition method 2x + y = - 1x - 2y = - 4
inna [77]

Answer:

x = -6/5

y =7/5

Step-by-step explanation:

2x + y = - 1

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Add this to the second equation

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6 0
3 years ago
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