5p+7-4p=-21

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Solution for 5p+7-4p=-21 equation: 


Simplifying
5p + 7 + -4p = -21

Reorder the terms:
7 + 5p + -4p = -21

Combine like terms: 5p + -4p = 1p
7 + 1p = -21

Solving
7 + 1p = -21

Solving for variable 'p'.

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

Add '-7' to each side of the equation.
7 + -7 + 1p = -21 + -7

Combine like terms: 7 + -7 = 0
0 + 1p = -21 + -7
1p = -21 + -7

Combine like terms: -21 + -7 = -28
1p = -28

Divide each side by '1'.
p = -28

Simplifying
p = -28

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