21+2=30-c

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Solution for 21+2=30-c equation: 



21+2=30-c

We move all terms to the left:

21+2-(30-c)=0

We add all the numbers together, and all the variables

-(-1c+30)+21+2=0

We add all the numbers together, and all the variables

-(-1c+30)+23=0

We get rid of parentheses

1c-30+23=0

We add all the numbers together, and all the variables

c-7=0

We move all terms containing c to the left, all other terms to the right

c=7

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