How do you multiply $- \frac{1}{5} (10 a - 25 b)$ $-1/5(10a - 25b)$ ?

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Answer 1 · 2016-04-13T06:59:31

$= - 2 a + 5 b$ $= -2a + 5b$

$- \frac{1}{5} (10 a - 25 b)$ $- 1 /5 ( 10a - 25b)$

$- \frac{1}{5} \cdot (10 a - 25 b)$ $color(blue)( - 1 /5) * ( 10a - 25b)$

$= (- \frac{1}{5}) \cdot (10 a) + (- \frac{1}{5}) (- 25 b)$ $= color(blue)(( - 1 /5)) * ( 10a) + ( color(blue)( - 1 /5)) (- 25b)$

$= color(blue)(( - 1 /cancel5)) * ( cancel10a) + ( color(blue)( - 1 /cancel5)) (- cancel25b)$

$= -2a + 5b$

How do you multiply -1/5(10a - 25b)−15(10a−25b)-1/5(10a - 25b)?