\[8=-3c+29\]

1
Subtract 2929 from both sides.
829=3c8-29=-3c

2
Simplify  8298-29  to  21-21.
21=3c-21=-3c

3
Divide both sides by 3-3.
213=c\frac{-21}{-3}=c

4
Two negatives make a positive.
213=c\frac{21}{3}=c

5
Simplify  213\frac{21}{3}  to  77.
7=c7=c

6
Switch sides.
c=7c=7

Done

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