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( 5 5/6 - 5,5 ) * 0,3
= 36/10 * 3/5 - (175/100 * 8/9 - 7/3 *100/525) * 0,9
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(35/6 - 5,5 ) * 0,3
= 108/50 - (7/3 - 100/225) * 0,9
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1/3 * 0,3
= 108/50 - 425/225 * 0,9
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0,1
= 108/50 - 17/10
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0,1
= 23/50
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0,1
= 23/5 = 4,6
b) (20/2 - 5/2) : (-0,25) * (16/7 - 41/7)
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2,25 * 0,25
= 7,5 : (-0,25) * (-25/7)
________________________ =
0,5625
= 7,5 : 25/28
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0,5625
= 42/50
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0,5625
= 0,84 : 0,5625 = 8400 / 5625