9n-45=10n-20

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Solution for 9n-45=10n-20 equation:


Simplifying
9n + -45 = 10n + -20

Reorder the terms:
-45 + 9n = 10n + -20

Reorder the terms:
-45 + 9n = -20 + 10n

Solving
-45 + 9n = -20 + 10n

Solving for variable 'n'.

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

Add '-10n' to each side of the equation.
-45 + 9n + -10n = -20 + 10n + -10n

Combine like terms: 9n + -10n = -1n
-45 + -1n = -20 + 10n + -10n

Combine like terms: 10n + -10n = 0
-45 + -1n = -20 + 0
-45 + -1n = -20

Add '45' to each side of the equation.
-45 + 45 + -1n = -20 + 45

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

Combine like terms: -20 + 45 = 25
-1n = 25

Divide each side by '-1'.
n = -25

Simplifying
n = -25

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