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liliya84
@liliya84
October 2021
2
13
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Найти значение выражения
а) 1 1/22 * 3 2/3 - (2 5/6 + 3 5/6 * 7/27) * 3/5
б) (3 1/4 + 2 1/6) : 2 3/5 - 2/3 : 4/9
в) (6 3/4 - 5 1/8 : 1 9/32) * 5/11
г) (1 9/16 * 3 1/5 + 16 2/3 - 9 : 2 2/5) : (17 7/12 - 6 1/3)
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Answers & Comments
kirillmtvv
А) -2 1/6
б) 7/12
в)там что то не так там получается (27/4 - 164/19) * 5/11
0 votes
Thanks 2
жеккаа
a) 11/22*32/3-(25/6+35/6*7/27)*3/5
-(1*5/6+3*5*7/162)3/5+11*3*2/22*3
-(10/6+105/162)3/5+11*2/22
22/22-(5/3+35/54)3/5
1-90+35/54 3/5
1-(90+35)*3/54*5
1-125*3/270
1-375/270
1-25/18
18-25/18
-7/18
-0.3888889
Ответ: -0.3888889
б) (3 1/4+2 1/6)*3/2*5-2/3/4*1/9
(3*1+2*1)*3/10-2*1/3/4*9
(3/4+2/6)*3/10-2*1/3*1/4*9
-2*1*1/3*4*9+(3/4+1/3)*3/10
-2/108+ 9+4/12 *3/10
(9+4)*3/12 /10-1/54
(9+4)*3/12*1/10-1/54
(9+4)*3*1/12*10-1/54
13*3/120-1/54
39/120-1/54
13/40-1/54
351-20/1080
331/1080
0.30
Ответ:0.30
в) (6 3/4-5 1/8:1 9/32)*5/11
(6*3/4-5*1*9/8 /1*32)*5/11
(18/4-5*1*9/8*1/1*32)*5/11
(-5*1*9*1/8*1*32+9/2)*5/11
(-5*9*1/8*32+9/2)*5/11
(-45/256+9/2)*5/11
-45+1152/256*5/11
(-45+1152)*5/256*11
1107*5/2816
5535/2816
1.965554
Ответ: 1.965554
г) (1 9/16 * 3 1/5 + 16 2/3 - 9 : 2 2/5) : (17 7/12 - 6 1/3)
9/16*3 1/5+16*2/3-9*2/2*5 / 17*7/12-6*1/3
9*3*1/16*15+32/3-9/5 / 119/12-6/3
27/240+32/3-9/5 / 119/12-2
9/80+32-9/5 / 119-24/12
(9/80+32/3-9/5)*12/119-24
27+2560-432/240*12/119-24
(27+2560-432)*12/240(119-24)
1255*12/240*95
25860/28800
431/380
1.1342105
Ответ: 1.1342105
0 votes
Thanks 1
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Answers & Comments
б) 7/12
в)там что то не так там получается (27/4 - 164/19) * 5/11
-(1*5/6+3*5*7/162)3/5+11*3*2/22*3
-(10/6+105/162)3/5+11*2/22
22/22-(5/3+35/54)3/5
1-90+35/54 3/5
1-(90+35)*3/54*5
1-125*3/270
1-375/270
1-25/18
18-25/18
-7/18
-0.3888889
Ответ: -0.3888889
б) (3 1/4+2 1/6)*3/2*5-2/3/4*1/9
(3*1+2*1)*3/10-2*1/3/4*9
(3/4+2/6)*3/10-2*1/3*1/4*9
-2*1*1/3*4*9+(3/4+1/3)*3/10
-2/108+ 9+4/12 *3/10
(9+4)*3/12 /10-1/54
(9+4)*3/12*1/10-1/54
(9+4)*3*1/12*10-1/54
13*3/120-1/54
39/120-1/54
13/40-1/54
351-20/1080
331/1080
0.30
Ответ:0.30
в) (6 3/4-5 1/8:1 9/32)*5/11
(6*3/4-5*1*9/8 /1*32)*5/11
(18/4-5*1*9/8*1/1*32)*5/11
(-5*1*9*1/8*1*32+9/2)*5/11
(-5*9*1/8*32+9/2)*5/11
(-45/256+9/2)*5/11
-45+1152/256*5/11
(-45+1152)*5/256*11
1107*5/2816
5535/2816
1.965554
Ответ: 1.965554
г) (1 9/16 * 3 1/5 + 16 2/3 - 9 : 2 2/5) : (17 7/12 - 6 1/3)
9/16*3 1/5+16*2/3-9*2/2*5 / 17*7/12-6*1/3
9*3*1/16*15+32/3-9/5 / 119/12-6/3
27/240+32/3-9/5 / 119/12-2
9/80+32-9/5 / 119-24/12
(9/80+32/3-9/5)*12/119-24
27+2560-432/240*12/119-24
(27+2560-432)*12/240(119-24)
1255*12/240*95
25860/28800
431/380
1.1342105
Ответ: 1.1342105