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Simplifying
7p2 + 16 = 21
Reorder the terms:
16 + 7p2 = 21
Solving
16 + 7p2 = 21
Solving for variable 'p'.
Move all terms containing p to the left, all other terms to the right.
Add '-16' to each side of the equation.
16 + -16 + 7p2 = 21 + -16
Combine like terms: 16 + -16 = 0
0 + 7p2 = 21 + -16
7p2 = 21 + -16
Combine like terms: 21 + -16 = 5
7p2 = 5
Divide each side by '7'.
p2 = 0.7142857143
Simplifying
p2 = 0.7142857143
Take the square root of each side:
p = {-0.845154255, 0.845154255}
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