9=Rf+.08(10-Rf)

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Solution for 9=Rf+.08(10-Rf) equation:


Simplifying
9 = Rf + 0.08(10 + -1Rf)
9 = fR + (10 * 0.08 + -1fR * 0.08)
9 = fR + (0.8 + -0.08fR)

Reorder the terms:
9 = 0.8 + fR + -0.08fR

Combine like terms: fR + -0.08fR = 0.92fR
9 = 0.8 + 0.92fR

Solving
9 = 0.8 + 0.92fR

Solving for variable 'f'.

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

Add '-0.92fR' to each side of the equation.
9 + -0.92fR = 0.8 + 0.92fR + -0.92fR

Combine like terms: 0.92fR + -0.92fR = 0.00
9 + -0.92fR = 0.8 + 0.00
9 + -0.92fR = 0.8

Add '-9' to each side of the equation.
9 + -9 + -0.92fR = 0.8 + -9

Combine like terms: 9 + -9 = 0
0 + -0.92fR = 0.8 + -9
-0.92fR = 0.8 + -9

Combine like terms: 0.8 + -9 = -8.2
-0.92fR = -8.2

Divide each side by '-0.92R'.
f = 8.913043478R-1

Simplifying
f = 8.913043478R-1

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