Question

2,3 * 5/4 * 0,8+1,7 * 3/11 * 3 2/3​

Answer 1

Ответ:

23*5*8 17*3*11 23 17

_____ + _______ =__+___=4

10*4*10 10*11*3 10 10

Answer 2

Ответ:

Пошаговое объяснение:

2,3×5/4×0,8+1,7×3/11×3 2/3=23/10×5/4×8/10+17/10×3/11×11/3=

=23/10+17/10=40/10=4

(5/8)х-0,5=2 3/4

(5/8)х=11/4+5/10

(5/8)х=13/4

х=13/4×8/5

х=26/5 или 5 1/5

Проверка:

5/8×26/5-0,5=2 3/4

13/4-5/10=2 3/4

11/4=2 3/4

2 3/4=2 3/4 (верно)

Answer 3

Sure! Let's break down the expression step by step.

The given expression is:

2.3 * 5/4 * 0.8 * 1.7 * 3/11 * 3 + 2/3

To evaluate this expression, we need to follow the order of operations, which is commonly known as PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction).

Step 1: Multiplication and Division

Let's simplify the multiplication and division part of the expression:

2.3 * 5/4 * 0.8 * 1.7 * 3/11 * 3

First, let's multiply the numbers:

2.3 * 0.8 * 1.7 * 3 = 8.8408

Now, let's divide the numbers:

8.8408 * 5/4 * 3/11 * 3

To divide fractions, we multiply the numerator of the first fraction by the denominator of the second fraction, and the denominator of the first fraction by the numerator of the second fraction:

8.8408 * (5 * 3) / (4 * 11) * 3

Simplifying further:

8.8408 * 15 / 44 * 3

Step 2: Multiplication and Division (continued)

Now, let's continue simplifying the expression:

8.8408 * 15 / 44 * 3

Multiplying 8.8408 by 15:

132.612 * 3 / 44

Dividing 132.612 by 44:

3.01527272727

Step 3: Addition and Subtraction

Lastly, let's calculate the remaining addition and subtraction in the expression:

3.01527272727 + 2/3

To add a whole number and a fraction, we need to convert the whole number into a fraction with a common denominator. In this case, the common denominator is 3:

3.01527272727 + 2/3

Converting 3 into a fraction with a denominator of 3:

9/3 + 2/3

Adding the fractions:

11/3

So, the final answer to the expression 2.3 * 5/4 * 0.8 * 1.7 * 3/11 * 3 + 2/3 is 11/3 (or approximately 3.6667).