12a+4b=1 2a-b=2 solve using substitution method

Question

12a+4b=1
2a-b=2
solve using substitution method

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Arianna 3 days 2021-09-14T01:05:25+00:00 1 Answer 0 views 0

Answers ( )

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    2021-09-14T01:06:47+00:00

    a=9/20

    b= -11/10

    Step-by-step explanation:

    a=2+b/2

    12a+4b=1

    12(b+2/2)+4b=1

    6(2+b)+4b=1

    12+6b+4b=1

    12+10b=1

    10b=1-12

    b = -11/10

    put value of b in 2a- b=2

    2a-(-11/10)=2

    2a=2-11/10

    2a=20-11/10

    2a=9/10

    a=9/20

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