Question

3)(64.2-1.28)=3.242 4)5,05-(y-0,76)=2,075

Answer 1

Ответ:

3) ложь; 4)3,735

Пошаговое объяснение:

3) 62,92=3,242 - ложь

4) Раскрываем скобки: 5,05-у+0,76=2,075

5,81-у=2,075

Переносим постоянную вправо и меняем знак: -у=2,075-5,81

-у=-3,735

у=3,735

Answer 2

To solve these equations, let's simplify the expressions step by step:

1. (64.2 - 1.28) = 62.92

Therefore, the result of (64.2 - 1.28) is 62.92.

2. 5.05 - (y - 0.76) = 2.075

First, distribute the negative sign inside the parentheses: = 5.05 - y + 0.76 = 2.075

Next, combine like terms: = 5.81 - y = 2.075

To isolate the variable "y," we need to get rid of the constant term on the left side. Let's subtract 5.81 from both sides:

• y = 2.075 - 5.81
• y = -3.735

Finally, multiply both sides by -1 to solve for "y":

y = 3.735

Therefore, the value of "y" that satisfies the equation 5.05 - (y - 0.76) = 2.075 is y = 3.735.