7(1+3n)=7(1-n)

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


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

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

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

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

Solving
21n = -7n

Solving for variable 'n'.

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

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

Combine like terms: 21n + 7n = 28n
28n = -7n + 7n

Combine like terms: -7n + 7n = 0
28n = 0

Divide each side by '28'.
n = 0

Simplifying
n = 0

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