7(1-p)=21-3p)

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Solution for 7(1-p)=21-3p) equation:



7(1-p)=21-3p)
We move all terms to the left:
7(1-p)-(21-3p))=0
We add all the numbers together, and all the variables
7(-1p+1)-(-3p+21))=0
We multiply parentheses
-7p-(-3p+21))+7=0

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