-21=5p+7+9p

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Solution for -21=5p+7+9p equation:


Simplifying
-21 = 5p + 7 + 9p

Reorder the terms:
-21 = 7 + 5p + 9p

Combine like terms: 5p + 9p = 14p
-21 = 7 + 14p

Solving
-21 = 7 + 14p

Solving for variable 'p'.

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

Add '-14p' to each side of the equation.
-21 + -14p = 7 + 14p + -14p

Combine like terms: 14p + -14p = 0
-21 + -14p = 7 + 0
-21 + -14p = 7

Add '21' to each side of the equation.
-21 + 21 + -14p = 7 + 21

Combine like terms: -21 + 21 = 0
0 + -14p = 7 + 21
-14p = 7 + 21

Combine like terms: 7 + 21 = 28
-14p = 28

Divide each side by '-14'.
p = -2

Simplifying
p = -2

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