-10(n+1)+20(2n+13)=7

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Solution for -10(n+1)+20(2n+13)=7 equation:


Simplifying
-10(n + 1) + 20(2n + 13) = 7

Reorder the terms:
-10(1 + n) + 20(2n + 13) = 7
(1 * -10 + n * -10) + 20(2n + 13) = 7
(-10 + -10n) + 20(2n + 13) = 7

Reorder the terms:
-10 + -10n + 20(13 + 2n) = 7
-10 + -10n + (13 * 20 + 2n * 20) = 7
-10 + -10n + (260 + 40n) = 7

Reorder the terms:
-10 + 260 + -10n + 40n = 7

Combine like terms: -10 + 260 = 250
250 + -10n + 40n = 7

Combine like terms: -10n + 40n = 30n
250 + 30n = 7

Solving
250 + 30n = 7

Solving for variable 'n'.

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

Add '-250' to each side of the equation.
250 + -250 + 30n = 7 + -250

Combine like terms: 250 + -250 = 0
0 + 30n = 7 + -250
30n = 7 + -250

Combine like terms: 7 + -250 = -243
30n = -243

Divide each side by '30'.
n = -8.1

Simplifying
n = -8.1

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