5(-2n+1)+3(4n-6)=21

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Solution for 5(-2n+1)+3(4n-6)=21 equation:


Simplifying
5(-2n + 1) + 3(4n + -6) = 21

Reorder the terms:
5(1 + -2n) + 3(4n + -6) = 21
(1 * 5 + -2n * 5) + 3(4n + -6) = 21
(5 + -10n) + 3(4n + -6) = 21

Reorder the terms:
5 + -10n + 3(-6 + 4n) = 21
5 + -10n + (-6 * 3 + 4n * 3) = 21
5 + -10n + (-18 + 12n) = 21

Reorder the terms:
5 + -18 + -10n + 12n = 21

Combine like terms: 5 + -18 = -13
-13 + -10n + 12n = 21

Combine like terms: -10n + 12n = 2n
-13 + 2n = 21

Solving
-13 + 2n = 21

Solving for variable 'n'.

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

Add '13' to each side of the equation.
-13 + 13 + 2n = 21 + 13

Combine like terms: -13 + 13 = 0
0 + 2n = 21 + 13
2n = 21 + 13

Combine like terms: 21 + 13 = 34
2n = 34

Divide each side by '2'.
n = 17

Simplifying
n = 17

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