Question

5 1/4(12-а)-3 3/4-(-а-24),якщо а=-0,4

Answer 1

Ответ:

Ответ на фото

Пошаговое объяснение:

Объяснение на фото

Answer 2

To evaluate the expression when a = -0.4, substitute the value of 'a' into the expression and perform the calculations step by step.

Given expression: 5 1/4(12-а) - 3 3/4 - (-а-24)

Let's replace 'а' with -0.4:

Step 1: Calculate 12 - а 12 - (-0.4) = 12 + 0.4 = 12.4

Step 2: Calculate 5 1/4(12-а) 5 1/4 * 12.4 = 5.25 * 12.4 = 65.1

Step 3: Calculate -(-а-24) -(-0.4 - 24) = -(-24.4) = 24.4

Step 4: Calculate 3 3/4 3 3/4 = 3.75

Now, we can rewrite the entire expression with the calculated values:

5 1/4(12-а) - 3 3/4 - (-а-24) = 65.1 - 3.75 - 24.4

Finally, let's compute the result:

65.1 - 3.75 - 24.4 = 65.1 - 28.15 ≈ 36.95

So, when a = -0.4, the expression evaluates to approximately 36.95.