Question

5-6 класс, мишин, евтушенко, вариант 30 примеры 1-5 30.1 ((227-(499-(73-16)+60-7):495):113-2):746= 30.2 (495-((381-(367-92:46))х25+79))х98+63+31= 30.3 61+36+(67+(318-(32+26)):13):29-68-12= 30.4 99+((45+25+92-60)х6-15)х5+39+44х39= 30.5 30:15+(65+(30+(30:10+72:18)х69)х3):802-2=

Answer 1

1 номер. ...... сверху

Answer 2

To solve these expressions, let's go through them one by one:

30.1: ((227-(499-(73-16)+60-7):495):113-2):746

Step 1: Simplify the innermost parentheses (73-16) = 57 (60-7) = 53

Step 2: Continue simplifying the inner parentheses 499 - (57 + 53) = 499 - 110 = 389

Step 3: Simplify the next innermost parentheses (389:495) = 389 / 495 ≈ 0.7856

Step 4: Continue simplifying the outer parentheses 0.7856:113 = 0.00695663717 (rounded to 11 decimal places)

Step 5: Final calculation 0.00695663717 - 2 ≈ -1.9930433638 (rounded to 11 decimal places) -1.9930433638:746 ≈ -0.00267391424 (rounded to 11 decimal places)

Answer for 30.1: -0.00267391424 (rounded to 11 decimal places)

30.2: (495-((381-(367-92:46))х25+79))х98+63+31

Step 1: Simplify the innermost parentheses (92:46) = 2

Step 2: Continue simplifying the inner parentheses (367 - 2) = 365 (381 - 365) = 16

Step 3: Simplify the next innermost parentheses (16 * 25 + 79) = 479

Step 4: Simplify the outer parentheses (495 - 479) = 16

Step 5: Continue the calculation (16 * 98) + 63 + 31 = 1568 + 63 + 31 = 1662

Answer for 30.2: 1662

30.3: 61+36+(67+(318-(32+26)):13):29-68-12

Step 1: Simplify the inner parentheses (32 + 26) = 58

Step 2: Continue simplifying the inner parentheses (318 - 58) = 260

Step 3: Simplify the next innermost parentheses (260:13) = 20

Step 4: Continue simplifying the outer parentheses (67 + 20) = 87

Step 5: Continue the calculation 61 + 36 + 87:29 - 68 - 12 = 61 + 36 + 3 - 68 - 12 = 20

Answer for 30.3: 20

30.4: 99+((45+25+92-60)х6-15)х5+39+44х39

Step 1: Simplify the inner parentheses (45 + 25 + 92 - 60) = 102

Step 2: Continue simplifying the inner parentheses (102 * 6 - 15) = 597

Step 3: Continue the calculation (597 * 5) + 39 + (44 * 39) = 2985 + 39 + 1716 = 4739

Answer for 30.4: 4739

30.5: 30:15+(65+(30+(30:10+72:18)х69)х3):802-2

Step 1: Simplify the inner parentheses (30:10) = 3 (72:18) = 4

Step 2: Continue simplifying the inner parentheses (30 + 3 + 4 * 69) = 327

Step 3: Continue the calculation (65 + 327 * 3) = 1046

Step 4: Continue the calculation (30:15) = 2

Step 5: Final calculation 2 + 1046:802 - 2 = 2 + 1.30324074074 - 2 ≈ 1.30324074074 (rounded to 11 decimal places)

Answer for 30.5: 1.30324074074 (rounded to 11 decimal places)

Please note that in the calculations above, I rounded the results to 11 decimal places for clarity.