20-8n=-4(7n+9)

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Solution for 20-8n=-4(7n+9) equation:


Simplifying
20 + -8n = -4(7n + 9)

Reorder the terms:
20 + -8n = -4(9 + 7n)
20 + -8n = (9 * -4 + 7n * -4)
20 + -8n = (-36 + -28n)

Solving
20 + -8n = -36 + -28n

Solving for variable 'n'.

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

Add '28n' to each side of the equation.
20 + -8n + 28n = -36 + -28n + 28n

Combine like terms: -8n + 28n = 20n
20 + 20n = -36 + -28n + 28n

Combine like terms: -28n + 28n = 0
20 + 20n = -36 + 0
20 + 20n = -36

Add '-20' to each side of the equation.
20 + -20 + 20n = -36 + -20

Combine like terms: 20 + -20 = 0
0 + 20n = -36 + -20
20n = -36 + -20

Combine like terms: -36 + -20 = -56
20n = -56

Divide each side by '20'.
n = -2.8

Simplifying
n = -2.8

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