Solve for c, a, b
c=3
a=-3
b=0
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c=3
Solve 3=c for c.
0=a-b+3 -9=4a+2b+3
Substitute 3 for c in the second and third equation.
a=b-3 b=-6-2a
Solve these equations for a and b respectively.
b=-6-2\left(b-3\right)
Substitute b-3 for a in the equation b=-6-2a.
b=0
Solve b=-6-2\left(b-3\right) for b.
a=0-3
Substitute 0 for b in the equation a=b-3.
a=-3
Calculate a from a=0-3.
c=3 a=-3 b=0
The system is now solved.
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