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 21 views 0

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    2021-07-28T21:35:08+00:00

    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 = ? ( )