0.83=4+20*(n-1)+8

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Solution for 0.83=4+20*(n-1)+8 equation: 


Simplifying
0.83 = 4 + 20(n + -1) + 8

Reorder the terms:
0.83 = 4 + 20(-1 + n) + 8
0.83 = 4 + (-1 * 20 + n * 20) + 8
0.83 = 4 + (-20 + 20n) + 8

Reorder the terms:
0.83 = 4 + -20 + 8 + 20n

Combine like terms: 4 + -20 = -16
0.83 = -16 + 8 + 20n

Combine like terms: -16 + 8 = -8
0.83 = -8 + 20n

Solving
0.83 = -8 + 20n

Solving for variable 'n'.

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

Add '-20n' to each side of the equation.
0.83 + -20n = -8 + 20n + -20n

Combine like terms: 20n + -20n = 0
0.83 + -20n = -8 + 0
0.83 + -20n = -8

Add '-0.83' to each side of the equation.
0.83 + -0.83 + -20n = -8 + -0.83

Combine like terms: 0.83 + -0.83 = 0.00
0.00 + -20n = -8 + -0.83
-20n = -8 + -0.83

Combine like terms: -8 + -0.83 = -8.83
-20n = -8.83

Divide each side by '-20'.
n = 0.4415

Simplifying
n = 0.4415

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