21p-45-3(2p+30)=0

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Solution for 21p-45-3(2p+30)=0 equation:


Simplifying
21p + -45 + -3(2p + 30) = 0

Reorder the terms:
21p + -45 + -3(30 + 2p) = 0
21p + -45 + (30 * -3 + 2p * -3) = 0
21p + -45 + (-90 + -6p) = 0

Reorder the terms:
-45 + -90 + 21p + -6p = 0

Combine like terms: -45 + -90 = -135
-135 + 21p + -6p = 0

Combine like terms: 21p + -6p = 15p
-135 + 15p = 0

Solving
-135 + 15p = 0

Solving for variable 'p'.

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

Add '135' to each side of the equation.
-135 + 135 + 15p = 0 + 135

Combine like terms: -135 + 135 = 0
0 + 15p = 0 + 135
15p = 0 + 135

Combine like terms: 0 + 135 = 135
15p = 135

Divide each side by '15'.
p = 9

Simplifying
p = 9

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