30.5=-2(5.5f+4.5)

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Solution for 30.5=-2(5.5f+4.5) equation: 


Simplifying
30.5 = -2(5.5f + 4.5)

Reorder the terms:
30.5 = -2(4.5 + 5.5f)
30.5 = (4.5 * -2 + 5.5f * -2)
30.5 = (-9 + -11f)

Solving
30.5 = -9 + -11f

Solving for variable 'f'.

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

Add '11f' to each side of the equation.
30.5 + 11f = -9 + -11f + 11f

Combine like terms: -11f + 11f = 0
30.5 + 11f = -9 + 0
30.5 + 11f = -9

Add '-30.5' to each side of the equation.
30.5 + -30.5 + 11f = -9 + -30.5

Combine like terms: 30.5 + -30.5 = 0.0
0.0 + 11f = -9 + -30.5
11f = -9 + -30.5

Combine like terms: -9 + -30.5 = -39.5
11f = -39.5

Divide each side by '11'.
f = -3.590909091

Simplifying
f = -3.590909091

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