priyamathoor priyamathoor
  • 19-03-2017
  • Mathematics
contestada

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 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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