7(3-4n)=12n-19

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Solution for 7(3-4n)=12n-19 equation:


Simplifying
7(3 + -4n) = 12n + -19
(3 * 7 + -4n * 7) = 12n + -19
(21 + -28n) = 12n + -19

Reorder the terms:
21 + -28n = -19 + 12n

Solving
21 + -28n = -19 + 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.
21 + -28n + -12n = -19 + 12n + -12n

Combine like terms: -28n + -12n = -40n
21 + -40n = -19 + 12n + -12n

Combine like terms: 12n + -12n = 0
21 + -40n = -19 + 0
21 + -40n = -19

Add '-21' to each side of the equation.
21 + -21 + -40n = -19 + -21

Combine like terms: 21 + -21 = 0
0 + -40n = -19 + -21
-40n = -19 + -21

Combine like terms: -19 + -21 = -40
-40n = -40

Divide each side by '-40'.
n = 1

Simplifying
n = 1

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