Question

45. 1) (127+89) 305 ● - 42993; 2) 59 057: 73 + 239 49; 3) 139 725 : 405-151 892 508; 4) 7410 + 51 642: (517 + 389); 5) 81 (2423 - 1879): 36; 6) (10 034 - 17 514: 21) 25.​

Answer 1

Пошаговое объяснение:

так правильнооооооооооооо

Answer 2

Let's solve each of these mathematical expressions step by step:

1. (127+89) * 305 - 42993 First, calculate the sum inside the parentheses: 127 + 89 = 216 Then, multiply by 305: 216 * 305 = 65880 Finally, subtract 42993: 65880 - 42993 = 22887

2. 59,057 / 73 + 239,49 First, divide 59,057 by 73: 59,057 / 73 ≈ 810.95 (rounded to two decimal places) Then, add 239.49: 810.95 + 239.49 ≈ 1050.44

3. 139,725 / 405 - 151,892,508 First, divide 139,725 by 405: 139,725 / 405 ≈ 345 (rounded to the nearest whole number) Then, subtract 151,892,508: 345 - 151,892,508 ≈ -151,892,163

4. 7,410 + 51,642 / (517 + 389) First, calculate the sum inside the parentheses: 517 + 389 = 906 Then, divide 51,642 by 906: 51,642 / 906 ≈ 57 (rounded to the nearest whole number) Finally, add 7,410: 7,410 + 57 = 7,467

5. 81 * (2,423 - 1,879) / 36 First, calculate the difference inside the parentheses: 2,423 - 1,879 = 544 Then, multiply by 81: 544 * 81 = 44,064 Finally, divide by 36: 44,064 / 36 = 1,224

6. (10,034 - 17,514 / 21) * 25 First, divide 17,514 by 21: 17,514 / 21 = 834 Then, subtract from 10,034: 10,034 - 834 = 9,200 Finally, multiply by 25: 9,200 * 25 = 230,000

So, the solutions to the given expressions are:

1. 22,887
2. 1,050.44
3. -151,892,163
4. 7,467
5. 1,224
6. 230,000