163=3n-7(3+7n)

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Solution for 163=3n-7(3+7n) equation:


Simplifying
163 = 3n + -7(3 + 7n)
163 = 3n + (3 * -7 + 7n * -7)
163 = 3n + (-21 + -49n)

Reorder the terms:
163 = -21 + 3n + -49n

Combine like terms: 3n + -49n = -46n
163 = -21 + -46n

Solving
163 = -21 + -46n

Solving for variable 'n'.

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

Add '46n' to each side of the equation.
163 + 46n = -21 + -46n + 46n

Combine like terms: -46n + 46n = 0
163 + 46n = -21 + 0
163 + 46n = -21

Add '-163' to each side of the equation.
163 + -163 + 46n = -21 + -163

Combine like terms: 163 + -163 = 0
0 + 46n = -21 + -163
46n = -21 + -163

Combine like terms: -21 + -163 = -184
46n = -184

Divide each side by '46'.
n = -4

Simplifying
n = -4

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