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27 February, 09:10

A+b = - 10

2a+b=-33

what is the value of b in the system of equations shown above

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  1. 27 February, 10:10
    0
    Simplest method: elimination.

    Subtract the first equation from the second one.

    (2a+b=-33) - (a+b=-10) gets you to a=-23.

    Now plug that in for a and solve.

    -23 + b=-10

    b=13
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