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13. 20 x 4/5=multiplying of fraction
14. 18 x 2/9 =
15. 5/8 x 64 =
16. 5/6 x 30 =
17.6/9 x 45 =​

Sagot :

SAXOURIEXIAOGO

Answer:

This is a shortcut if you want avoid long multiplication.

First, you have to examine the equation if it can be cancelled out.

13. (20)(⅘)=16, if you notice 20 is a multiple of 5 from the fraction ⅘, just divide it so it will now be 4 then multiply it by 4

14. 18/9=2x2=4

15. 64/8=8x5=40

so on..

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