Solve for C
C=45
Solve for a
a\in \mathrm{R}
C=45
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C=17+8-1+12-a-c+3+c+6+a
Add 5 and 12 to get 17.
C=25-1+12-a-c+3+c+6+a
Add 17 and 8 to get 25.
C=24+12-a-c+3+c+6+a
Subtract 1 from 25 to get 24.
C=36-a-c+3+c+6+a
Add 24 and 12 to get 36.
C=39-a-c+c+6+a
Add 36 and 3 to get 39.
C=39-a+6+a
Combine -c and c to get 0.
C=45-a+a
Add 39 and 6 to get 45.
C=45
Combine -a and a to get 0.
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