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Solve for a, b, c
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a=-b-1-c
Solve -1=a+b+c for a.
2=4\left(-b-1-c\right)+2b+c 5=-b-1-c-b+c
Substitute -b-1-c for a in the second and third equation.
c=-2-\frac{2}{3}b b=-3
Solve these equations for c and b respectively.
c=-2-\frac{2}{3}\left(-3\right)
Substitute -3 for b in the equation c=-2-\frac{2}{3}b.
c=0
Calculate c from c=-2-\frac{2}{3}\left(-3\right).
a=-\left(-3\right)-1-0
Substitute 0 for c and -3 for b in the equation a=-b-1-c.
a=2
Calculate a from a=-\left(-3\right)-1-0.
a=2 b=-3 c=0
The system is now solved.