21n-3(5-6n)=34-(19-15n)

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Solution for 21n-3(5-6n)=34-(19-15n) equation:


Simplifying
21n + -3(5 + -6n) = 34 + -1(19 + -15n)
21n + (5 * -3 + -6n * -3) = 34 + -1(19 + -15n)
21n + (-15 + 18n) = 34 + -1(19 + -15n)

Reorder the terms:
-15 + 21n + 18n = 34 + -1(19 + -15n)

Combine like terms: 21n + 18n = 39n
-15 + 39n = 34 + -1(19 + -15n)
-15 + 39n = 34 + (19 * -1 + -15n * -1)
-15 + 39n = 34 + (-19 + 15n)

Combine like terms: 34 + -19 = 15
-15 + 39n = 15 + 15n

Solving
-15 + 39n = 15 + 15n

Solving for variable 'n'.

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

Add '-15n' to each side of the equation.
-15 + 39n + -15n = 15 + 15n + -15n

Combine like terms: 39n + -15n = 24n
-15 + 24n = 15 + 15n + -15n

Combine like terms: 15n + -15n = 0
-15 + 24n = 15 + 0
-15 + 24n = 15

Add '15' to each side of the equation.
-15 + 15 + 24n = 15 + 15

Combine like terms: -15 + 15 = 0
0 + 24n = 15 + 15
24n = 15 + 15

Combine like terms: 15 + 15 = 30
24n = 30

Divide each side by '24'.
n = 1.25

Simplifying
n = 1.25

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