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15.6p+19.99-17.2p=-19.79-4.2p
We move all terms to the left:
15.6p+19.99-17.2p-(-19.79-4.2p)=0
We add all the numbers together, and all the variables
15.6p-17.2p-(-4.2p-19.79)+19.99=0
We add all the numbers together, and all the variables
-1.6p-(-4.2p-19.79)+19.99=0
We get rid of parentheses
-1.6p+4.2p+19.79+19.99=0
We add all the numbers together, and all the variables
2.6p+39.78=0
We move all terms containing p to the left, all other terms to the right
2.6p=-39.78
p=-39.78/2.6
p=-15+0.78/2.6
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