Question

-2,4 - 1,75 - (-5/21)

Answer 1

Ответ:

1,325-2,41=-3.735

-2,4-1,75-(-5/12)=-4.15-5\12=-83\20+5\12=-249\60+25\60=-224\60=-3 11\15

Пошаговое объяснение:

пожалуйсита ))

Answer 2

To calculate the expression -2,4 - 1,75 - (-5/21), you can follow these steps:

1. Subtract -1.75 from -2.4: -2.4 - (-1.75) = -2.4 + 1.75 = -0.65

2. Then, subtract -5/21 from the result: -0.65 - (-5/21) = -0.65 + (5/21)

To add -0.65 and 5/21, you'll need a common denominator, which is 21:

-0.65 = -13/20

Now, add -13/20 and 5/21:

(-13/20) + (5/21)

To find a common denominator, you can multiply the denominator of the first fraction (20) by 21 and the denominator of the second fraction (21) by 20:

(-13/20) * (21/21) + (5/21) * (20/20)

Now, you have a common denominator of 420:

(-13 * 21)/(20 * 21) + (5 * 20)/(21 * 20)

Now, calculate the numerators:

-273/420 + 100/420

Now, you can add the fractions:

(-273 + 100)/420

-173/420

So, the result of the expression -2.4 - 1.75 - (-5/21) is approximately equal to -173/420.