7-n=7(1+3n)

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Solution for 7-n=7(1+3n) equation: 


Simplifying
7 + -1n = 7(1 + 3n)
7 + -1n = (1 * 7 + 3n * 7)
7 + -1n = (7 + 21n)

Add '-7' to each side of the equation.
7 + -7 + -1n = 7 + -7 + 21n

Combine like terms: 7 + -7 = 0
0 + -1n = 7 + -7 + 21n
-1n = 7 + -7 + 21n

Combine like terms: 7 + -7 = 0
-1n = 0 + 21n
-1n = 21n

Solving
-1n = 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.
-1n + -21n = 21n + -21n

Combine like terms: -1n + -21n = -22n
-22n = 21n + -21n

Combine like terms: 21n + -21n = 0
-22n = 0

Divide each side by '-22'.
n = 0

Simplifying
n = 0

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