21n-35=20n-45

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Solution for 21n-35=20n-45 equation:


Simplifying
21n + -35 = 20n + -45

Reorder the terms:
-35 + 21n = 20n + -45

Reorder the terms:
-35 + 21n = -45 + 20n

Solving
-35 + 21n = -45 + 20n

Solving for variable 'n'.

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

Add '-20n' to each side of the equation.
-35 + 21n + -20n = -45 + 20n + -20n

Combine like terms: 21n + -20n = 1n
-35 + 1n = -45 + 20n + -20n

Combine like terms: 20n + -20n = 0
-35 + 1n = -45 + 0
-35 + 1n = -45

Add '35' to each side of the equation.
-35 + 35 + 1n = -45 + 35

Combine like terms: -35 + 35 = 0
0 + 1n = -45 + 35
1n = -45 + 35

Combine like terms: -45 + 35 = -10
1n = -10

Divide each side by '1'.
n = -10

Simplifying
n = -10

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