7[p+1]=9-p

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Solution for 7[p+1]=9-p equation:


Simplifying
7[p + 1] = 9 + -1p

Reorder the terms:
7[1 + p] = 9 + -1p
[1 * 7 + p * 7] = 9 + -1p
[7 + 7p] = 9 + -1p

Solving
7 + 7p = 9 + -1p

Solving for variable 'p'.

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

Add 'p' to each side of the equation.
7 + 7p + p = 9 + -1p + p

Combine like terms: 7p + p = 8p
7 + 8p = 9 + -1p + p

Combine like terms: -1p + p = 0
7 + 8p = 9 + 0
7 + 8p = 9

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

Combine like terms: 7 + -7 = 0
0 + 8p = 9 + -7
8p = 9 + -7

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

Divide each side by '8'.
p = 0.25

Simplifying
p = 0.25

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