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28=7p-3(-p-4)
We simplify the equation to the form, which is simple to understand
28=7p-3(-p-4)
Reorder the terms in parentheses
28=7p+(+3p+12)
Remove unnecessary parentheses
+28=+7p+3p+12
We move all terms containing p to the left and all other terms to the right.
-7p-3p=+12-28
We simplify left and right side of the equation.
-10p=-16
We divide both sides of the equation by -10 to get p.
p=1.6
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