Question

Вычичлить -2 3/4•8,-4 3/8•4/9,-9/16•6/81,-1000•-2 15/50

Answer 1

-46;-2,3888888889;-0,0416666667;4,300

Answer 2

-2 + 3/4 • 8

First, we need to multiply 3/4 by 8:

3/4 • 8 = 24/4 = 6

Now, we can subtract -2 from 6:

-2 + 6 = 4

So, the result is 4.

-4 + 3/8 • 4/9

First, we need to multiply 3/8 by 4/9:

3/8 • 4/9 = 12/72 = 1/6

Now, we can add -4 to 1/6:

-4 + 1/6 = -24/6 + 1/6 = -23/6

So, the result is -23/6.

-9/16 • 6/81

To multiply these fractions, we simply multiply the numerators together and the denominators together:

(-9 • 6) / (16 • 81) = -54 / 1296

We can simplify this fraction by dividing both the numerator and the denominator by their greatest common divisor, which is 6:

-54 ÷ 6 = -9 1296 ÷ 6 = 216

So, the result is -9/216, which can be further simplified to -1/24.

-1000 • -2 + 15/50

First, we need to multiply -1000 by -2:

-1000 • -2 = 2000

Now, we can add 15/50 to 2000:

2000 + 15/50 = 2000 + 3/10 = 2000 + 0.3 = 2000.3

So, the result is 2000.3.