2 years ago

Solve the system of equations below. A. B. C. D.

Mathematics

1 answer:

timofeeve [1]2 years ago

7 0

Answer:

A. (-7 -2)

Step-by-step explanation:

You can eliminate y by multiplying the first equation by 7 and subtracting 6 times the second equation:

7(-3x +6y) -6(5x +7y) = 7(9) -6(-49)

-21x +42y -30x -42y = 63 +294 . . . . eliminate parentheses

-51x = 357 . . . . . . . . collect terms

x = -7 . . . . . . . divide by -51. This matches answer choice A.

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1 year ago

Is my answer correct? If not what’s the right answer

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Answer:

Yup, 27 is correct!

Step-by-step explanation:

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