3[2p+7]=15[p-4]

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Solution for 3[2p+7]=15[p-4] equation:


Simplifying
3[2p + 7] = 15[p + -4]

Reorder the terms:
3[7 + 2p] = 15[p + -4]
[7 * 3 + 2p * 3] = 15[p + -4]
[21 + 6p] = 15[p + -4]

Reorder the terms:
21 + 6p = 15[-4 + p]
21 + 6p = [-4 * 15 + p * 15]
21 + 6p = [-60 + 15p]

Solving
21 + 6p = -60 + 15p

Solving for variable 'p'.

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

Add '-15p' to each side of the equation.
21 + 6p + -15p = -60 + 15p + -15p

Combine like terms: 6p + -15p = -9p
21 + -9p = -60 + 15p + -15p

Combine like terms: 15p + -15p = 0
21 + -9p = -60 + 0
21 + -9p = -60

Add '-21' to each side of the equation.
21 + -21 + -9p = -60 + -21

Combine like terms: 21 + -21 = 0
0 + -9p = -60 + -21
-9p = -60 + -21

Combine like terms: -60 + -21 = -81
-9p = -81

Divide each side by '-9'.
p = 9

Simplifying
p = 9

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