# math

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can someone please explain/show how to do this? im really stuck with fractions

5 1/3 + (-3 9/18)

thanks so much

• math -

9 / 18 = 1 / 2

3 9 / 18 = 3 1 / 2

3 * 18 = 54

1 / 3 = 18 / 54

1 / 2 = 27 / 54

5 1 / 3 + ( - 3 9 / 18 ) =

5 1 / 3 - 3 9 / 18 =

5 1 / 3 - 3 1 / 2

5 + 18 / 54 - ( 3 + 27 / 54 ) =

5 - 3 + 18 / 54 - 27 / 54 =

2 - 9 / 54 =

2 - 9 / ( 9 * 6 ) =

2 - 1 / 6 =

1 + 1 - 1 / 6 =

1 + 6 / 6 - 1 / 6 =

1 + 5 / 6 =

1 5 / 6

• math -

1st of all its easier if u turn the fractions to improper frac.
16/3- 63/18

then, u get the least common ddenominator which is 18
96/18- 63/18
then subtract since the 2nd fraction is negative.... and you get 33/18 or 1 and 5/6
hope this helped:)

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