Y = -2x + 7 y = 5.2 – 7 What’s x and y?

Question

Y = -2x + 7
y = 5.2 – 7
What’s x and y?

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King 4 years 2021-07-19T11:52:24+00:00 1 Answers 1 views 0

Answers ( )

  1. Amity
    0
    2021-07-19T11:53:54+00:00
    Reply

    y=-1.8 x=4.4
    Explanation
    i solved using substitution
    y=5.2-7
    y=-1.8

    -1.8=-2x+7 (add 2x to both sides)
    2x-1.8=7 (add 1.8 to both sides)
    2x=8.8 (divide both sides by 2)
    x=4.4
    Hope this helped!

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )