13) y = 8x + 13 – 4x – 5y = 23

Question

13) y = 8x + 13
– 4x – 5y = 23

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Nick 5 years 2021-08-29T09:12:05+00:00 1 Answers 6 views 0

Answers ( )

  1. sori
    0
    2021-08-29T09:14:04+00:00
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    Answer:

    x=42/44

    Step-by-step explanation:

    Because y=8x+13, You will have to insert 8x+13 into y.

    -4x-5(8x+13)=23

    distribute 5(8x+13)

    5(8x)+5(13)

    40x+65

    Now you have this equation: -4x-40x+65=23.

    subtract -65 on both sides

    -4x-40x+65-65=23-65

    -4x-40x= -42

    Solve the x: -4x-40x= -44x

    Now you have -44x=-42

    Divide 44 on each sides

    -x=-42/44

    x=42/44

    (simplified: 21/22)

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