6n+4(n-1)+5=21

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Solution for 6n+4(n-1)+5=21 equation:


Simplifying
6n + 4(n + -1) + 5 = 21

Reorder the terms:
6n + 4(-1 + n) + 5 = 21
6n + (-1 * 4 + n * 4) + 5 = 21
6n + (-4 + 4n) + 5 = 21

Reorder the terms:
-4 + 5 + 6n + 4n = 21

Combine like terms: -4 + 5 = 1
1 + 6n + 4n = 21

Combine like terms: 6n + 4n = 10n
1 + 10n = 21

Solving
1 + 10n = 21

Solving for variable 'n'.

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

Add '-1' to each side of the equation.
1 + -1 + 10n = 21 + -1

Combine like terms: 1 + -1 = 0
0 + 10n = 21 + -1
10n = 21 + -1

Combine like terms: 21 + -1 = 20
10n = 20

Divide each side by '10'.
n = 2

Simplifying
n = 2

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