Question

-4 2/5×1 4/11-2,99:1,15+1 1/2​

Answer 1

Ответ:

-7,1

Пошаговое объяснение:

-4 2/5×1 4/11-2,99:1,15+1 1/2​

1) -4 2/5 * 1 4/11 = -22/5 * 15/11 = -6

2) 2,99:1,15=2,6

3) -6-2,6= -8,6

4)-8,6+1 1/2 = -8,6+1,5=-7,1

Answer 2

To solve this expression, you should follow the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders (i.e., powers and square roots, etc.), Multiplication and Division (left-to-right), and Addition and Subtraction (left-to-right).

Let's break down your expression step by step:

1. Start with multiplication and division, from left to right:

   -4 2/5 × 1 4/11 = (-22/5) × (15/11) = (-330/55) = -6

   2.99 ÷ 1.15 ≈ 2.6043478260869565 (rounded to 15 decimal places)

2. Now, add the results together:

   -6 + 2.6043478260869565 + 1 1/2

3. To add -6 and 2.6043478260869565, convert -6 to a fraction with a common denominator:

   -6 = -12/2

   -12/2 + 2.6043478260869565 + 1 1/2

4. Now, add the fractions:

   -12/2 + 1 1/2 = -12/2 + 3/2 = (-12 + 3)/2 = -9/2

5. Finally, add -9/2 to 2.6043478260869565:

   -9/2 + 2.6043478260869565 = -9/2 + 5.208695652173913 = -3.791304347826087

So, the final result is approximately -3.7913 (rounded to four decimal places).