Solve the pair of linear equations: a + b = 10 a – b = 9​

Question

Solve the pair of linear equations:
a + b = 10
a – b = 9​

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Charlie 3 weeks 2021-11-07T10:08:13+00:00 1 Answer 0 views 0

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    2021-11-07T10:09:19+00:00

    Answer:

    take a+b=10 equation 1

    a-b=9 equation 2

    then,

    solving equations 1 and 2

    a+b=10

    a-b=9

    (+)

    ______

    2a=19

    =>a=19/2=9.5

    now,

    putting the value of a in equation 1

    therefore,a+b=10

    =>9.5+b=10

    =>b=10-9.5=0.5

    so, a=9.5

    b=0.5

    Step-by-step explanation:

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