Question

-(а-0,6с)-11-0,3(-2а-0,8с)+5 при а=-3 с=6

Answer 1

Ответ:

Пошаговое объяснение:

подставляем данные в уравнение

-(-3+ 0,6*6) - 11 - 0,3 (-2* (-3) - 0,8*6) +5

Решаем скобки

-(-3 + 3,6) - 11 - 0,3 (6 - 4,8) + 5 =

-0,6 - 11 - 0,36 + 5 = - 6, 96

Answer 2

To evaluate the expression -(а-0.6с)-11-0.3(-2а-0.8с)+5 for the given values of а and с, substitute а=-3 and с=6 into the expression and perform the calculations step by step:

-(а - 0.6с) - 11 - 0.3(-2а - 0.8с) + 5

Now, substitute the values of а=-3 and с=6:

-( -3 - 0.6 * 6) - 11 - 0.3(-2 * (-3) - 0.8 * 6) + 5

Perform the calculations inside the parentheses first:

-( -3 - 3.6) - 11 - 0.3(-(-6) - 4.8) + 5

Now, continue with the calculations inside the parentheses:

-( -6.6) - 11 - 0.3(6 - 4.8) + 5

Now, perform the remaining calculations:

6.6 - 11 - 0.3 * 1.2 + 5

Next, perform the multiplication:

6.6 - 11 - 0.36 + 5

Now, perform the subtraction:

(6.6 - 11) - 0.36 + 5

-4.4 - 0.36 + 5

Finally, perform the last subtraction:

-4.76 + 5

Now, add the last two numbers:

0.24

So, when а=-3 and с=6, the value of the expression -(а-0.6с)-11-0.3(-2а-0.8с)+5 is 0.24.