Dx+fy=m

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Solution for Dx+fy=m equation: 


Simplifying
Dx + fy = m

Reorder the terms:
fy + xD = m

Solving
fy + xD = m

Solving for variable 'f'.

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

Add '-1xD' to each side of the equation.
fy + xD + -1xD = m + -1xD

Combine like terms: xD + -1xD = 0
fy + 0 = m + -1xD
fy = m + -1xD

Divide each side by 'y'.
f = my-1 + -1xy-1D

Simplifying
f = my-1 + -1xy-1D

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