7=-2(4n-4.5)

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Solution for 7=-2(4n-4.5) equation:


Simplifying
7 = -2(4n + -4.5)

Reorder the terms:
7 = -2(-4.5 + 4n)
7 = (-4.5 * -2 + 4n * -2)
7 = (9 + -8n)

Solving
7 = 9 + -8n

Solving for variable 'n'.

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

Add '8n' to each side of the equation.
7 + 8n = 9 + -8n + 8n

Combine like terms: -8n + 8n = 0
7 + 8n = 9 + 0
7 + 8n = 9

Add '-7' to each side of the equation.
7 + -7 + 8n = 9 + -7

Combine like terms: 7 + -7 = 0
0 + 8n = 9 + -7
8n = 9 + -7

Combine like terms: 9 + -7 = 2
8n = 2

Divide each side by '8'.
n = 0.25

Simplifying
n = 0.25

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