7p+8=9p-9

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Solution for 7p+8=9p-9 equation:


Simplifying
7p + 8 = 9p + -9

Reorder the terms:
8 + 7p = 9p + -9

Reorder the terms:
8 + 7p = -9 + 9p

Solving
8 + 7p = -9 + 9p

Solving for variable 'p'.

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

Add '-9p' to each side of the equation.
8 + 7p + -9p = -9 + 9p + -9p

Combine like terms: 7p + -9p = -2p
8 + -2p = -9 + 9p + -9p

Combine like terms: 9p + -9p = 0
8 + -2p = -9 + 0
8 + -2p = -9

Add '-8' to each side of the equation.
8 + -8 + -2p = -9 + -8

Combine like terms: 8 + -8 = 0
0 + -2p = -9 + -8
-2p = -9 + -8

Combine like terms: -9 + -8 = -17
-2p = -17

Divide each side by '-2'.
p = 8.5

Simplifying
p = 8.5

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