2n-21=3n-36

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Solution for 2n-21=3n-36 equation:


Simplifying
2n + -21 = 3n + -36

Reorder the terms:
-21 + 2n = 3n + -36

Reorder the terms:
-21 + 2n = -36 + 3n

Solving
-21 + 2n = -36 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
-21 + 2n + -3n = -36 + 3n + -3n

Combine like terms: 2n + -3n = -1n
-21 + -1n = -36 + 3n + -3n

Combine like terms: 3n + -3n = 0
-21 + -1n = -36 + 0
-21 + -1n = -36

Add '21' to each side of the equation.
-21 + 21 + -1n = -36 + 21

Combine like terms: -21 + 21 = 0
0 + -1n = -36 + 21
-1n = -36 + 21

Combine like terms: -36 + 21 = -15
-1n = -15

Divide each side by '-1'.
n = 15

Simplifying
n = 15

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