40=20+4n

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Solution for 40=20+4n equation: 


Simplifying
40 = 20 + 4n

Solving
40 = 20 + 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.
40 + -4n = 20 + 4n + -4n

Combine like terms: 4n + -4n = 0
40 + -4n = 20 + 0
40 + -4n = 20

Add '-40' to each side of the equation.
40 + -40 + -4n = 20 + -40

Combine like terms: 40 + -40 = 0
0 + -4n = 20 + -40
-4n = 20 + -40

Combine like terms: 20 + -40 = -20
-4n = -20

Divide each side by '-4'.
n = 5

Simplifying
n = 5

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