По действиям! 1)(2ц1/2)2*8/15-5/9 2)(2ц1/3*1ц2/7)3*2/9 3)(3ц1/14-2ц5/21)*(2,7-2,1) 4)(4ц13/18-3ц7/9)*(1/2-4/17) 5)7/11*))3/7)2+5/7) 6)(7/12-3/16-5/24)+(1/4)2

Предыдущий
вопрос Следующий
вопрос

1) (2(1/2)28/15) - (5/9)
= (12*8/15) - (5/9)
= (16/15) - (5/9)
= (96/90) - (50/90)
= 46/90
= 23/45

2) ((2(1/3))(1(2/7))^3) (2/9)
= (2/3) (2/7)^3 (2/9)
= (2/3) (8/343) (2/9)
= 32/1923

3) ((3(1/14) - 2(5/21)) (2.7 - 2.1)
= ((3/14) - (10/21)) 0.6
= (3/14 - 10/21) 0.6
= (-4/42) 0.6
= -0.057142857

4) ((4(13/18) - 3(7/9)) ((1/2) - (4/17))
= ((52/18) - (21/9)) (1/2 - 4/17)
= (2.8888888888889 - 2.3333333333333) (0.5 - 0.23529411764706)
= 0.5555555555556 0.26470588235294
= 0.14705882352941

5) (7/11) ((((3/7) 2) + (5/7))
= (7/11) ((6/7) + (5/7))
= (7/11) (11/7)
= 1

6) ((7/12) - (3/16) - (5/24)) + (1/4) * 2
= (7/12 - 3/16 - 5/24) + 0.5
= (14/24 - 9/24 - 10/24) + 0.5
= (-5/24) + 0.5
= 0.47916666666667