Question

|25|+|-5|-|4/9|•|-2 1/4|

Answer 1

Ответ:

Для начала вынесем модуь.

Пошаговое объяснение:

Если перед скобками стоит знак минус, то при ее раскрытии, знаки значений меняются на противоположный знак.

25+(-5)-4/9•(-2 1/4)

25 + 5 + 4/9 • (2 1/4);

25 + 5 + 4/9 • (2 * 4  + 1)/4;  

25 + 5 + 4/9 • (8 + 1)/4;  

25 + 5 + 4/9 • 9/4;  

25 + 5 + (4 * 9)/(9 * 4);

25 + 5 + 36/36;

36/36 представляем как 1(дробная черта-знак деленя)

25 + 5 + 1;

|25|+|-5|-|4/9|•|-2 1/4|=25+(-5)-4/9•(-2 1/4)=   31

помогла?

Answer 2

Let's break down the expression step by step:

1. |25| = 25 (since the absolute value of 25 is 25).
2. |-5| = 5 (since the absolute value of -5 is 5).
3. |4/9| = 4/9 (since the absolute value of any positive or negative fraction is the fraction itself).
4. |-2 1/4| = 2 1/4 (since the absolute value of -2 1/4 is 2 1/4).

Now let's substitute these values back into the original expression:

|25| + |-5| - |4/9| * |-2 1/4|

= 25 + 5 - (4/9) * (2 1/4)

Next, let's convert the mixed fraction into an improper fraction:

2 1/4 = 9/4

Substitute the improper fraction back into the expression:

= 25 + 5 - (4/9) * (9/4)

Now, perform the multiplication:

= 25 + 5 - (36/36)

= 25 + 5 - 1

Finally, perform the addition and subtraction:

= 30 - 1

= 29

So, the value of the expression |25| + |-5| - |4/9| * |-2 1/4| is 29.