91=p+80

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Solution for 91=p+80 equation:


Simplifying
91 = p + 80

Reorder the terms:
91 = 80 + p

Solving
91 = 80 + p

Solving for variable 'p'.

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

Add '-1p' to each side of the equation.
91 + -1p = 80 + p + -1p

Combine like terms: p + -1p = 0
91 + -1p = 80 + 0
91 + -1p = 80

Add '-91' to each side of the equation.
91 + -91 + -1p = 80 + -91

Combine like terms: 91 + -91 = 0
0 + -1p = 80 + -91
-1p = 80 + -91

Combine like terms: 80 + -91 = -11
-1p = -11

Divide each side by '-1'.
p = 11

Simplifying
p = 11

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