42=18-4n

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Solution for 42=18-4n equation:


Simplifying
42 = 18 + -4n

Solving
42 = 18 + -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.
42 + 4n = 18 + -4n + 4n

Combine like terms: -4n + 4n = 0
42 + 4n = 18 + 0
42 + 4n = 18

Add '-42' to each side of the equation.
42 + -42 + 4n = 18 + -42

Combine like terms: 42 + -42 = 0
0 + 4n = 18 + -42
4n = 18 + -42

Combine like terms: 18 + -42 = -24
4n = -24

Divide each side by '4'.
n = -6

Simplifying
n = -6

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