2+5=(n-1)

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Solution for 2+5=(n-1) equation:


Simplifying
2 + 5 = (n + -1)

Combine like terms: 2 + 5 = 7
7 = (n + -1)

Reorder the terms:
7 = (-1 + n)

Remove parenthesis around (-1 + n)
7 = -1 + n

Solving
7 = -1 + n

Solving for variable 'n'.

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

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

Combine like terms: n + -1n = 0
7 + -1n = -1 + 0
7 + -1n = -1

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

Combine like terms: 7 + -7 = 0
0 + -1n = -1 + -7
-1n = -1 + -7

Combine like terms: -1 + -7 = -8
-1n = -8

Divide each side by '-1'.
n = 8

Simplifying
n = 8

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