99=100-4*n

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Solution for 99=100-4*n equation:


Simplifying
99 = 100 + -4n

Solving
99 = 100 + -4n

Solving for variable 'n'.

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

Add '4n' to each side of the equation.
99 + 4n = 100 + -4n + 4n

Combine like terms: -4n + 4n = 0
99 + 4n = 100 + 0
99 + 4n = 100

Add '-99' to each side of the equation.
99 + -99 + 4n = 100 + -99

Combine like terms: 99 + -99 = 0
0 + 4n = 100 + -99
4n = 100 + -99

Combine like terms: 100 + -99 = 1
4n = 1

Divide each side by '4'.
n = 0.25

Simplifying
n = 0.25

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