30.25=120-10n

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Solution for 30.25=120-10n equation:


Simplifying
30.25 = 120 + -10n

Solving
30.25 = 120 + -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.
30.25 + 10n = 120 + -10n + 10n

Combine like terms: -10n + 10n = 0
30.25 + 10n = 120 + 0
30.25 + 10n = 120

Add '-30.25' to each side of the equation.
30.25 + -30.25 + 10n = 120 + -30.25

Combine like terms: 30.25 + -30.25 = 0.00
0.00 + 10n = 120 + -30.25
10n = 120 + -30.25

Combine like terms: 120 + -30.25 = 89.75
10n = 89.75

Divide each side by '10'.
n = 8.975

Simplifying
n = 8.975

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