78x-12=21-99x

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Solution for 78x-12=21-99x equation: 



78x-12=21-99x

We move all terms to the left:

78x-12-(21-99x)=0

We add all the numbers together, and all the variables

78x-(-99x+21)-12=0

We get rid of parentheses

78x+99x-21-12=0

We add all the numbers together, and all the variables

177x-33=0

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

177x=33

x=33/177

x=11/59

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