-5n-2(-7n-5)=20+4n

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Solution for -5n-2(-7n-5)=20+4n equation:


Simplifying
-5n + -2(-7n + -5) = 20 + 4n

Reorder the terms:
-5n + -2(-5 + -7n) = 20 + 4n
-5n + (-5 * -2 + -7n * -2) = 20 + 4n
-5n + (10 + 14n) = 20 + 4n

Reorder the terms:
10 + -5n + 14n = 20 + 4n

Combine like terms: -5n + 14n = 9n
10 + 9n = 20 + 4n

Solving
10 + 9n = 20 + 4n

Solving for variable 'n'.

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

Add '-4n' to each side of the equation.
10 + 9n + -4n = 20 + 4n + -4n

Combine like terms: 9n + -4n = 5n
10 + 5n = 20 + 4n + -4n

Combine like terms: 4n + -4n = 0
10 + 5n = 20 + 0
10 + 5n = 20

Add '-10' to each side of the equation.
10 + -10 + 5n = 20 + -10

Combine like terms: 10 + -10 = 0
0 + 5n = 20 + -10
5n = 20 + -10

Combine like terms: 20 + -10 = 10
5n = 10

Divide each side by '5'.
n = 2

Simplifying
n = 2

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