priyamathoor priyamathoor

19-03-2017
Mathematics

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a+b= -10
2a+b=-33
what is the value of b in the system of equations shown above

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duskowl45 duskowl45

19-03-2017

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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