I have two equations a-2b=8 and 4a+3b=21 how can you solve one of these for a​

Question

I have two equations

a-2b=8 and 4a+3b=21 how can you solve one of these for a​

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Thanh Hà 6 months 2021-07-28T02:53:09+00:00 1 Answers 7 views 0

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    2021-07-28T02:54:54+00:00

    Step-by-step explanation:

    You could find a number that can be multiplied by 2 and a number for a that when you subtract from the number that you multiplied by 2 can give the result of 8.

    Example:

    a-2b=8: a=12-2•2=8

    12-4=8

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