n+40=21n

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Solution for n+40=21n equation:


Simplifying
n + 40 = 21n

Reorder the terms:
40 + n = 21n

Solving
40 + n = 21n

Solving for variable 'n'.

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

Add '-21n' to each side of the equation.
40 + n + -21n = 21n + -21n

Combine like terms: n + -21n = -20n
40 + -20n = 21n + -21n

Combine like terms: 21n + -21n = 0
40 + -20n = 0

Add '-40' to each side of the equation.
40 + -40 + -20n = 0 + -40

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

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

Divide each side by '-20'.
n = 2

Simplifying
n = 2

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