Question

100:50(60%-50%)-70-80+(20+70)-60=​

Answer 1

Ответ:

-119,8

2×⅒-70-80+90-60=⅕-70-80+90-60=⅕-120=-119,8

Answer 2

Let's break down the expression step by step:

1. 100:50(60%-50%): This can be simplified as follows:

   • First, calculate 60% of 50: 0.6 * 50 = 30
   • Next, calculate 50% of 50: 0.5 * 50 = 25
   • Now, subtract the two results: 30 - 25 = 5
   • Finally, divide 100 by 5: 100 / 5 = 20

2. 20+70: Simply add 20 and 70: 20 + 70 = 90

3. (20+70)-60: Subtract 60 from the result of the previous step: 90 - 60 = 30

4. 70-80: Subtract 80 from 70: 70 - 80 = -10

5. 20: The value 20 remains unchanged.

Now, let's put it all together:

20 + (20 + 70) - 60 + (70 - 80) = 20 + 90 - 60 - 10 = 140 - 70 = 70

So, the result of the given expression is 70.