3(n-7)=-4n-21

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Solution for 3(n-7)=-4n-21 equation:


Simplifying
3(n + -7) = -4n + -21

Reorder the terms:
3(-7 + n) = -4n + -21
(-7 * 3 + n * 3) = -4n + -21
(-21 + 3n) = -4n + -21

Reorder the terms:
-21 + 3n = -21 + -4n

Add '21' to each side of the equation.
-21 + 21 + 3n = -21 + 21 + -4n

Combine like terms: -21 + 21 = 0
0 + 3n = -21 + 21 + -4n
3n = -21 + 21 + -4n

Combine like terms: -21 + 21 = 0
3n = 0 + -4n
3n = -4n

Solving
3n = -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.
3n + 4n = -4n + 4n

Combine like terms: 3n + 4n = 7n
7n = -4n + 4n

Combine like terms: -4n + 4n = 0
7n = 0

Divide each side by '7'.
n = 0

Simplifying
n = 0

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