Question

find the sum of a) 18/25 + -23/25..................... b) -17/20 + -3/20...........................c)29/30 + -9/30

Answer 1

Step-by-step explanation:

a)-23/25 + 18/25 = -5/25 = -1/5

b)-17/20 + -3/20 = -17+-3 /20 = -20/20 = -1

c)29/30 + -9/30 = 29+-9/30 = 20/30 = 2/3

Answer 2

$a) \frac{18}{25} + \Big( \frac{-23}{25}\Big)$

$= \frac{18}{25} - \frac{23}{25}$

$= \frac{18-23}{25}$

$= \frac{-5}{25}$

$= \frac{-1}{5}$

$b) \frac{-17}{20} + \Big( \frac{-3}{20}\Big)$

$= \frac{-17}{20} - \frac{3}{20}$

$= \frac{-17-3}{20}$

$= \frac{-20}{20}$

$= -1$

$c) \frac{29}{30} + \Big( \frac{-9}{30}\Big)$

$= \frac{29}{25} - \frac{9}{30}$

$= \frac{29-9}{30}$

$= \frac{20}{30}$

$= \frac{2}{3}$

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