21=-5p-2p

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Solution for 21=-5p-2p equation:


Simplifying
21 = -5p + -2p

Combine like terms: -5p + -2p = -7p
21 = -7p

Solving
21 = -7p

Solving for variable 'p'.

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

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

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

Add '-21' to each side of the equation.
21 + -21 + 7p = 0 + -21

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

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

Divide each side by '7'.
p = -3

Simplifying
p = -3

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