7(p+8)=21

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Solution for 7(p+8)=21 equation: 


Simplifying
7(p + 8) = 21

Reorder the terms:
7(8 + p) = 21
(8 * 7 + p * 7) = 21
(56 + 7p) = 21

Solving
56 + 7p = 21

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '-56' to each side of the equation.
56 + -56 + 7p = 21 + -56

Combine like terms: 56 + -56 = 0
0 + 7p = 21 + -56
7p = 21 + -56

Combine like terms: 21 + -56 = -35
7p = -35

Divide each side by '7'.
p = -5

Simplifying
p = -5

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