Найди значения выражений. 45 + 29 54 – 23 70 – 7 67 – 6 96 – 50 67 + 30 55 + 43 47 + 36 98 – 46 80 - - id519960320221019 от tanushkako 19.10.2022 14:52

Question

Математика: Найди значения выражений. 45 + 29 54 – 23 70 – 7 67 – 6 96 – 50 67 + 30 55 + 43 47 + 36 98 – 46 80 - 67 74 - 28 36 + 24

tanushkako · Accepted Answer

2 1/2 × (2/15- 3 5/6)-2 3/4
2/15-3 5/6= 2/15-23/6=4/30-115/30= -111/30
2 1/2×(-111/30)= -5/4×111/30= -111/24

-111/24-2 3/4= -111/24-11/4= -111/24-66/24= -177/24= -7 9/24= - 7 3/8

- 1 1/7 ×(4/5+19/20)×(6 5/6+4 2/3)
4/5+19/20=16/20+19/20=35/20=7/4

6 5/6+4 2/3=10 (5/6+2/3)= 10(5/6+4/6)= 10(9/6)=
10(3/2)=10+1 1/2=11 1/2=23/2

-8/7×7/4×23/2= -23

(6 3/8-2 3/4)×(-4)+ 7/18×9
6 3/8-2 3/4=4(3/8-6/8)= 4-3/8=3 5/8=29/8
29/8×(-4)= -29/2

7/18×9=7/2
-29/2+7/2= -22/2= -11

9 1/6: (4 1/3-8)+24× 3/8
4 1/3-8= -3 2/3= - 11/3
9 1/6÷(-11/3)=55/6×(-3/11)= -5/2
24×3/8=9
-5/2+9=9- 2 1/2= 6 1/2

Найди значения выражений. 45 + 29 54 – 23 70 – 7 67 – 6 96 – 50 67 + 30 55 + 43 47 + 36 98 – 46 80 - 67 74 - 28 36 + 24

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