Question

Solve the system of equations using elimination. 5x+4y=−14
3x+6y=6

A: (−6, 4)
B: (0.4, −4)
C: (−5.6, 3.5)

Answers

  1. Answer:
    The answer is (A) (-6,4).
    Step-by-step explanation:
    First you have to multiply the first equation by 6 and the second equation by 4. Then next you subtract the second equation from 1.
    30x + 24y = – 84
    12x + 24y = 24
    18x + 0. = – 108
    => 18x = – 108
    => x = – 108 / 18
    => x = – 6
    Then for the next step
    then put in x = – 6 in equation 2 and solve for y
    (
    3x + 6y = 6)
    (3×(-6) + 6y = 6)
    ( – 18 + 6y = 6)
    ( 6y = 18 + 6
    )
    ( 6y = 24)
    (y = 4
    )
    (I really do hope this helps!!!)

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