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(8/21 - 3/7 +5/14-25/42)×(-5si 1/4) +(-0.8(3))

Răspuns :

HawkEyed
(8/21 - 3/7 +5/14-25/42)×(-5si 1/4) +(-0.8(3)) =

( 16/42 - 18/42 + 15/42 - 25/42) x(- 21/4) - 75/90 = 

-12/42 x (-21/4) - 5/6 = 

- 6/21 x(- 21/4) - 5/6 =

3/2 - 5/6 = 

9/6 - 5/6 = 

4/6 = 

2/3 

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