-399=-7(1-7n)

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Solution for -399=-7(1-7n) equation:


Simplifying
-399 = -7(1 + -7n)
-399 = (1 * -7 + -7n * -7)
-399 = (-7 + 49n)

Solving
-399 = -7 + 49n

Solving for variable 'n'.

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

Add '-49n' to each side of the equation.
-399 + -49n = -7 + 49n + -49n

Combine like terms: 49n + -49n = 0
-399 + -49n = -7 + 0
-399 + -49n = -7

Add '399' to each side of the equation.
-399 + 399 + -49n = -7 + 399

Combine like terms: -399 + 399 = 0
0 + -49n = -7 + 399
-49n = -7 + 399

Combine like terms: -7 + 399 = 392
-49n = 392

Divide each side by '-49'.
n = -8

Simplifying
n = -8

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