Px+40=Qx+20Px+40=Qx+20

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Solution for Px+40=Qx+20Px+40=Qx+20 equation: 



P+40=P+20P+40=P+20

We move all terms to the left:

P+40-(P+20P+40)=0

We add all the numbers together, and all the variables

P-(21P+40)+40=0

We get rid of parentheses

P-21P-40+40=0

We add all the numbers together, and all the variables

-20P=0

P=0/-20

P=0

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