Срочно плиз 5/9 + 4/9 * 3 1/6 * (4/19 + 1 5/38 - 75/76). Created by billchiper122. matematika-ru

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3olotaya

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5/9 + 4/9 * 3 1/6 * (4/19 + 1 5/38 - 75/76)=1ц1/18
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(4/19 + 1ц 5/38 - 75/76)=4*4/19*4+1ц5*2/38*2-75*1/76*1=16/76+1ц10/76-75/76=1ц26/76-75/76=1*76+26/76-75/76=102/76-75/76=27/76

4/9 * 3ц 1/6=4/9*19/6=4*19/9*6=76/54=38/27=1ц11/27

1ц11/27*27/76=38/27*27/76=38*27/27*76=(27 и 27 сократим)=38/76=1/2

5/9+1/2=5*2/9*2+1*9+2*9=10/18+9/18=19/18=1ц1/18

8 votes Thanks 5

prettypushkova

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5/9 + 4/9 * 3 1/6 * (4/19 + 1 5/38 - 75/76) = 1 1/18
1) 4/19 + 1 5/38 = 8/38 + 1 5/38 = 1 13/38
2) 1 13/38 - 75/76 = 1 26/76 - 75/76 = 102/76 - 75/76 = 27/76
3) 4/9 * 3 1/6 = 4/9 * 19/6 = (2*19)/(9*3) = 38/27
4) 38/27 * 27/76 = 38/76 = 1/2
5) 5/9 + 1/2 = 10/18 + 9/18 = 19/18 = 1 1/18

17 votes Thanks 21

Answers & Comments

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