21-3n=-8(1+4n)

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Solution for 21-3n=-8(1+4n) equation:


Simplifying
21 + -3n = -8(1 + 4n)
21 + -3n = (1 * -8 + 4n * -8)
21 + -3n = (-8 + -32n)

Solving
21 + -3n = -8 + -32n

Solving for variable 'n'.

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

Add '32n' to each side of the equation.
21 + -3n + 32n = -8 + -32n + 32n

Combine like terms: -3n + 32n = 29n
21 + 29n = -8 + -32n + 32n

Combine like terms: -32n + 32n = 0
21 + 29n = -8 + 0
21 + 29n = -8

Add '-21' to each side of the equation.
21 + -21 + 29n = -8 + -21

Combine like terms: 21 + -21 = 0
0 + 29n = -8 + -21
29n = -8 + -21

Combine like terms: -8 + -21 = -29
29n = -29

Divide each side by '29'.
n = -1

Simplifying
n = -1

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