105=7-2(7n-7)

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Solution for 105=7-2(7n-7) equation:


Simplifying
105 = 7 + -2(7n + -7)

Reorder the terms:
105 = 7 + -2(-7 + 7n)
105 = 7 + (-7 * -2 + 7n * -2)
105 = 7 + (14 + -14n)

Combine like terms: 7 + 14 = 21
105 = 21 + -14n

Solving
105 = 21 + -14n

Solving for variable 'n'.

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

Add '14n' to each side of the equation.
105 + 14n = 21 + -14n + 14n

Combine like terms: -14n + 14n = 0
105 + 14n = 21 + 0
105 + 14n = 21

Add '-105' to each side of the equation.
105 + -105 + 14n = 21 + -105

Combine like terms: 105 + -105 = 0
0 + 14n = 21 + -105
14n = 21 + -105

Combine like terms: 21 + -105 = -84
14n = -84

Divide each side by '14'.
n = -6

Simplifying
n = -6

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