4n-3(n-5)=21

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Solution for 4n-3(n-5)=21 equation:


Simplifying
4n + -3(n + -5) = 21

Reorder the terms:
4n + -3(-5 + n) = 21
4n + (-5 * -3 + n * -3) = 21
4n + (15 + -3n) = 21

Reorder the terms:
15 + 4n + -3n = 21

Combine like terms: 4n + -3n = 1n
15 + 1n = 21

Solving
15 + 1n = 21

Solving for variable 'n'.

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

Add '-15' to each side of the equation.
15 + -15 + 1n = 21 + -15

Combine like terms: 15 + -15 = 0
0 + 1n = 21 + -15
1n = 21 + -15

Combine like terms: 21 + -15 = 6
1n = 6

Divide each side by '1'.
n = 6

Simplifying
n = 6

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