-21-7p=7(p-7)

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Solution for -21-7p=7(p-7) equation:


Simplifying
-21 + -7p = 7(p + -7)

Reorder the terms:
-21 + -7p = 7(-7 + p)
-21 + -7p = (-7 * 7 + p * 7)
-21 + -7p = (-49 + 7p)

Solving
-21 + -7p = -49 + 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 = -49 + 7p + -7p

Combine like terms: -7p + -7p = -14p
-21 + -14p = -49 + 7p + -7p

Combine like terms: 7p + -7p = 0
-21 + -14p = -49 + 0
-21 + -14p = -49

Add '21' to each side of the equation.
-21 + 21 + -14p = -49 + 21

Combine like terms: -21 + 21 = 0
0 + -14p = -49 + 21
-14p = -49 + 21

Combine like terms: -49 + 21 = -28
-14p = -28

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

Simplifying
p = 2

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