50n+90=40n+120

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Solution for 50n+90=40n+120 equation:


Simplifying
50n + 90 = 40n + 120

Reorder the terms:
90 + 50n = 40n + 120

Reorder the terms:
90 + 50n = 120 + 40n

Solving
90 + 50n = 120 + 40n

Solving for variable 'n'.

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

Add '-40n' to each side of the equation.
90 + 50n + -40n = 120 + 40n + -40n

Combine like terms: 50n + -40n = 10n
90 + 10n = 120 + 40n + -40n

Combine like terms: 40n + -40n = 0
90 + 10n = 120 + 0
90 + 10n = 120

Add '-90' to each side of the equation.
90 + -90 + 10n = 120 + -90

Combine like terms: 90 + -90 = 0
0 + 10n = 120 + -90
10n = 120 + -90

Combine like terms: 120 + -90 = 30
10n = 30

Divide each side by '10'.
n = 3

Simplifying
n = 3

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