What is 9/(2d-4f)+7/(8f-4d) ?

The solution to 9/(2d-4f)+7/(8f-4d) is -(11)/(8f-4d)

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simplify 9/(2d-4f)+7/(8f-4d)

simplify

\frac{9}{2 d - 4 f} + \frac{7}{8 f - 4 d}

- \frac{11}{8 f - 4 d}

Solution steps

\frac{9}{2 d - 4 f} + \frac{7}{8 f - 4 d}

Least Common Multiplier of

2 d - 4 f, 8 f - 4 d : (2 d - 4 f) (8 f - 4 d)

Adjust Fractions based on the LCM

= \frac{9 ( 8 f - 4 d )}{( 2 d - 4 f ) ( 8 f - 4 d )} + \frac{7 ( 2 d - 4 f )}{( 2 d - 4 f ) ( 8 f - 4 d )}

Apply the fraction rule:

\frac{a}{c} + \frac{b}{c} = \frac{a + b}{c}

= \frac{9 ( 8 f - 4 d ) + 7 ( 2 d - 4 f )}{( 2 d - 4 f ) ( 8 f - 4 d )}

Simplify

9 (8 f - 4 d) + 7 (2 d - 4 f) : - 22 d + 44 f

= \frac{- 22 d + 44 f}{( 2 d - 4 f ) ( 8 f - 4 d )}

Cancel

\frac{- 22 d + 44 f}{( 2 d - 4 f ) ( 8 f - 4 d )} : - \frac{11}{8 f - 4 d}

= - \frac{11}{8 f - 4 d}

\frac{x + 7}{x ^{2} + 4 x - 21}

9 \cdot 9 \cdot 9 \cdot 9 \cdot 9

(0.5 x - 3)^{2}

ln (1000000)

What is 9/(2d-4f)+7/(8f-4d) ?
The solution to 9/(2d-4f)+7/(8f-4d) is -(11)/(8f-4d)