9n+45=10n+40

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Solution for 9n+45=10n+40 equation:


Simplifying
9n + 45 = 10n + 40

Reorder the terms:
45 + 9n = 10n + 40

Reorder the terms:
45 + 9n = 40 + 10n

Solving
45 + 9n = 40 + 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 = 40 + 10n + -10n

Combine like terms: 9n + -10n = -1n
45 + -1n = 40 + 10n + -10n

Combine like terms: 10n + -10n = 0
45 + -1n = 40 + 0
45 + -1n = 40

Add '-45' to each side of the equation.
45 + -45 + -1n = 40 + -45

Combine like terms: 45 + -45 = 0
0 + -1n = 40 + -45
-1n = 40 + -45

Combine like terms: 40 + -45 = -5
-1n = -5

Divide each side by '-1'.
n = 5

Simplifying
n = 5

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