Question

(64,2-y) - 1,28=3,2485,05(y-076)=2,07550-(42,1-b) =36, 2721,34-(t+3,8) =12, 081​

Answer 1

(64,2 - у) - 1,28 = 3,248                 5,5(у - 0,76) = 2,75

64,2 - у = 3,248 + 1,28                  у - 0,76 = 2,75 : 5,5

64,2 - у = 4,528                             у - 0,76 = 0,5

у = 64,2 - 4,528                             у = 0,5 + 0,76

у = 59,672                                     у = 1,26

                                                      Примечание: 2,075 : 5,05 = 0,4108...

                                                      сочла за ошибку (2,75 : 5,5 = 0,5).

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50 - (42,1 - b) = 36,27                    21,34 - (t + 3,8) = 12,81

42,1 - b = 50 - 36,27                      t + 3,8 = 21,34 - 12,81

42,1 - b = 13,73                               t + 3,8 = 8,53

b = 42,1 - 13,73                               t = 8,53 - 3,8

b = 28,37                                        t = 4,73

                                                      тут тоже ошибка: 12,081 - это 12,81

                                                       Поправьте меня, если это не так!

Answer 2

It seems like you've provided a set of equations with variables y, b, and t. Let's solve these equations one by one:

1. $64 - 2y - 1.28 = 3.2485$

   First, simplify the equation:

   $62.72 - 2y = 3.2485$

   Now, isolate y by subtracting 62.72 from both sides:

   $-2y = 3.2485 - 62.72$ $-2y = -59.4715$

   Finally, divide by -2 to find the value of y:

   $y = -59.4715 / -2$ $y ≈ 29.73575$

2. $5.05(y - 0.76) = 2.0755$

   First, simplify the equation:

   $5.05y - 4.048 = 2.0755$

   Now, isolate y by adding 4.048 to both sides:

   $5.05y = 2.0755 + 4.048$ $5.05y = 6.1235$

   Finally, divide by 5.05 to find the value of y:

   $y = 6.1235 / 5.05$ $y ≈ 1.212376$

3. $42.1 - b = 36.272$

   First, simplify the equation:

   $42.1 - b = 36.272$

   Now, isolate b by subtracting 36.272 from both sides:

   $-b = 36.272 - 42.1$ $-b = -5.828$

   Finally, multiply by -1 to find the value of b:

   $b = -(-5.828)$ $b ≈ 5.828$

4. $21.34 - (t + 3.8) = 12.081$

   First, simplify the equation by removing the parentheses:

   $21.34 - t - 3.8 = 12.081$

   Now, isolate t by adding 3.8 to both sides and subtracting 12.081 from both sides:

   $-t = 12.081 - 21.34 + 3.8$ $-t = -5.459$

   Finally, multiply by -1 to find the value of t:

   $t = -(-5.459)$ $t ≈ 5.459$

So, the solutions to the equations are:

• $y ≈ 29.73575$
• $y ≈ 1.212376$
• $b ≈ 5.828$
• $t ≈ 5.459$