-7(3n+9)=12n

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Solution for -7(3n+9)=12n equation:


Simplifying
-7(3n + 9) = 12n

Reorder the terms:
-7(9 + 3n) = 12n
(9 * -7 + 3n * -7) = 12n
(-63 + -21n) = 12n

Solving
-63 + -21n = 12n

Solving for variable 'n'.

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

Add '-12n' to each side of the equation.
-63 + -21n + -12n = 12n + -12n

Combine like terms: -21n + -12n = -33n
-63 + -33n = 12n + -12n

Combine like terms: 12n + -12n = 0
-63 + -33n = 0

Add '63' to each side of the equation.
-63 + 63 + -33n = 0 + 63

Combine like terms: -63 + 63 = 0
0 + -33n = 0 + 63
-33n = 0 + 63

Combine like terms: 0 + 63 = 63
-33n = 63

Divide each side by '-33'.
n = -1.909090909

Simplifying
n = -1.909090909

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