780=-10n-10(8n+3)

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Solution for 780=-10n-10(8n+3) equation: 


Simplifying
780 = -10n + -10(8n + 3)

Reorder the terms:
780 = -10n + -10(3 + 8n)
780 = -10n + (3 * -10 + 8n * -10)
780 = -10n + (-30 + -80n)

Reorder the terms:
780 = -30 + -10n + -80n

Combine like terms: -10n + -80n = -90n
780 = -30 + -90n

Solving
780 = -30 + -90n

Solving for variable 'n'.

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

Add '90n' to each side of the equation.
780 + 90n = -30 + -90n + 90n

Combine like terms: -90n + 90n = 0
780 + 90n = -30 + 0
780 + 90n = -30

Add '-780' to each side of the equation.
780 + -780 + 90n = -30 + -780

Combine like terms: 780 + -780 = 0
0 + 90n = -30 + -780
90n = -30 + -780

Combine like terms: -30 + -780 = -810
90n = -810

Divide each side by '90'.
n = -9

Simplifying
n = -9

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