Question

Решите -0.28*4/7+5/7 :2 6/7

Answer 1

Ответ:

Пошаговое объяснение:

-0,28*4/7=-7/25*4/7=-4/25

5/7:2 6/7=5/7*7/20=1/4

-4/25+1/4=-16/100+25/100=9/100=

0,09

Answer 2

Ответ:

179

1225

или, сокращенно:

0,1

Answer 3

To solve the expression, follow the order of operations (PEMDAS/BODMAS):

1. Parentheses/Brackets
2. Exponents/Orders
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

Now, let's solve the expression step by step:

-0.28 * 4 / 7 + 5 / 7 : 2 6/7

Step 1: Perform Multiplication and Division from left to right:

-0.28 * 4 = -1.12 -1.12 / 7 = -0.16

Step 2: Next, perform the division:

5 / 7 = 0.71428571428 (approximately 0.71)

Step 3: Finally, perform the division with mixed number:

2 6/7 = 2 + 6/7 = 2 + 6/7 = 2.85714285714 (approximately 2.86)

Now, we have the simplified expression:

-0.16 + 0.71 : 2.86

Step 4: Perform the division:

0.71 / 2.86 ≈ 0.24825174825 (approximately 0.25)

Step 5: Perform the addition:

-0.16 + 0.25 = 0.09

So, the final result of the expression is approximately 0.09.