What is the result of subtracting the second equation from the first? -2x+y = 0 -7x+3y = 2

Question

What is the result of subtracting the second equation from the first?
-2x+y = 0
-7x+3y = 2

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Tryphena 3 years 2021-07-28T21:33:20+00:00 1 Answers 23 views 0

Answers ( )

  1. thaiduong
    0
    2021-07-28T21:35:08+00:00
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    Answer:

    -5x + 2y=2

    Step-by-step explanation:

    - 7x + 3y = 2 \\ - 2x + y = 0 \\ subtracting \: this.we \: have \\ ( - 7x \: + 3y - 2) - ( - 2x + y) \\ - 7x + 2x + 3y - y - 2 \\ - 5x + 2y - 2 \\ therefore \: we \: have \\ - 5x + 2y = 2

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