Question

(a-7)-1,8(3-a) при а=4 1/3 СРОЧНО!!!!!

Answer 1

Ответ:

Пошаговое объяснение:

(a-7)-1.8(3-a)=(4 1/3-7)-1.8(3-4 1/3)=(13/3-7)-18/10(3-13/3)=(13/3-21/3)-18/10(9/3-13/3)= -8/3-18/10×(-4/3)= -8/3-(12/5)= -8/3+12/5= -40/15+36/15= -4/15

Answer 2

To find the value of the expression (a-7)-1,8(3-a) when a = 4 1/3, follow these steps:

Step 1: Substitute the value of a with 4 1/3. Step 2: Perform the operations following the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders, Multiplication/Division, and Addition/Subtraction.

Let's do the calculations:

Step 1: Substitute a with 4 1/3: a = 4 1/3 = 4 + 1/3 = 4.333 (rounded to three decimal places).

Step 2: Evaluate the expression: (a-7)-1,8(3-a) = (4.333 - 7) - 1.8(3 - 4.333)

Now, let's continue with the operations:

(a-7) = (4.333 - 7) = -2.667 (3 - a) = (3 - 4.333) = -1.333

Next:

-1.8(3 - a) = -1.8 * (-1.333) = 2.4 (rounded to one decimal place)

Finally:

(a-7)-1,8(3-a) = -2.667 - 2.4 = -5.067 (rounded to three decimal places)

So, when a = 4 1/3, the value of the expression (a-7)-1,8(3-a) is approximately -5.067.