7p-21=-45+3p

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Solution for 7p-21=-45+3p equation:


Simplifying
7p + -21 = -45 + 3p

Reorder the terms:
-21 + 7p = -45 + 3p

Solving
-21 + 7p = -45 + 3p

Solving for variable 'p'.

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

Add '-3p' to each side of the equation.
-21 + 7p + -3p = -45 + 3p + -3p

Combine like terms: 7p + -3p = 4p
-21 + 4p = -45 + 3p + -3p

Combine like terms: 3p + -3p = 0
-21 + 4p = -45 + 0
-21 + 4p = -45

Add '21' to each side of the equation.
-21 + 21 + 4p = -45 + 21

Combine like terms: -21 + 21 = 0
0 + 4p = -45 + 21
4p = -45 + 21

Combine like terms: -45 + 21 = -24
4p = -24

Divide each side by '4'.
p = -6

Simplifying
p = -6

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