21-2n=5(6n+7)

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Solution for 21-2n=5(6n+7) equation:


Simplifying
21 + -2n = 5(6n + 7)

Reorder the terms:
21 + -2n = 5(7 + 6n)
21 + -2n = (7 * 5 + 6n * 5)
21 + -2n = (35 + 30n)

Solving
21 + -2n = 35 + 30n

Solving for variable 'n'.

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

Add '-30n' to each side of the equation.
21 + -2n + -30n = 35 + 30n + -30n

Combine like terms: -2n + -30n = -32n
21 + -32n = 35 + 30n + -30n

Combine like terms: 30n + -30n = 0
21 + -32n = 35 + 0
21 + -32n = 35

Add '-21' to each side of the equation.
21 + -21 + -32n = 35 + -21

Combine like terms: 21 + -21 = 0
0 + -32n = 35 + -21
-32n = 35 + -21

Combine like terms: 35 + -21 = 14
-32n = 14

Divide each side by '-32'.
n = -0.4375

Simplifying
n = -0.4375

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