Question

12 11/13-918 11/30-19/3013 - 5 5/1178 9/35-39 14/3532 9/16-18 7/16

Answer 1

Пошаговое объяснение:

12 11/13-9=3 11/13

18 11/30-19/30=551/30-19/30=532/30=

=266/15=17 11/15

78 9/35-39 14/35=2739/35-1379/35=

=1360/35=272/7=38 6/7

32 9/16-18 7/16=14 2/16=14 1/8

Answer 2

To perform the arithmetic operations with the given fractions, let's break it down step by step:

1. Add the fractions 11/13, 11/30, and 19/30: (11/13) + (11/30) + (19/30)

To add these fractions, we need to find a common denominator, which is 390. Then, convert each fraction to have a denominator of 390:

(11/13) * (30/30) = 330/390 (11/30) * (13/13) = 143/390 (19/30) * (13/13) = 247/390

Now, add these fractions:

330/390 + 143/390 + 247/390 = (330 + 143 + 247) / 390 = 720/390

2. Subtract the fractions 5/1178, 9/35, and 39/3532 from the result:

(720/390) - (5/1178) - (9/35) - (39/3532)

Again, find a common denominator, which is 157470. Convert each fraction to have a denominator of 157470:

(720/390) * (157470/157470) = 381660/157470 (5/1178) * (133110/133110) = 665550/157470 (9/35) * (4494/4494) = 40446/157470 (39/3532) * (5537260/5537260) = 216117240/157470

Now, subtract these fractions:

(381660/157470) - (665550/157470) - (40446/157470) - (216117240/157470)

Combine the numerators:

(381660 - 665550 - 40446 - 216117240) / 157470

Calculate the numerator:

(381660 - 665550 - 40446 - 216117240) = -217744576

Now, divide by the common denominator:

-217744576 / 157470 = -1381.373 (rounded to three decimal places)

So, the result of the expression is approximately -1381.373.