-90=-2p-3(7p+7)

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Solution for -90=-2p-3(7p+7) equation:


-90=-2p-3(7p+7)

We simplify the equation to the form, which is simple to understand 
-90=-2p-3(7p+7)

Reorder the terms in parentheses
-90=-2p+(-21p-21)

Remove unnecessary parentheses
-90=-2p-21p-21

We move all terms containing p to the left and all other terms to the right. 
+2p+21p=-21+90

We simplify left and right side of the equation. 
+23p=+69

We divide both sides of the equation by 23 to get p. 
p=3

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