Question

Вычислите (2- 3/4) * (2/3-2/5)= ? Помогите пожалуйста

Answer 1

Вначале приводишь к общему знаменателю: 2/1-3/4 = 8/4 - 3/4 = 5/4
далее вторую скобку 2/3 - 2/5 = 10/15 - 3/15 = 7/15
дальше перемножаешь 5/4 * 7/15 = 7/12. помоему так

Answer 2

(2*4-3)/4 * (2*5/3 - 3*2/5) = (8-3)/4 * (10-6)/15 = 5/4*4/15 = 4/3= 1 1/3

Answer 3

Calculating the Expression

To calculate the expression *(2 - 3/4) * (2/3 - 2/5)*, we can follow the order of operations, which is parentheses, multiplication, and then addition or subtraction.

First, let's simplify the expression within the parentheses:

Step 1: *(2 - 3/4)* This can be simplified to *(8/4 - 3/4)*, which equals *5/4*.

Step 2: *(2/3 - 2/5)* To simplify this, we need to find a common denominator, which is 15. So, we get *(10/15 - 6/15)*, which equals *4/15*.

Now, we can multiply the results of the two simplified expressions:

Step 3: *(5/4) * (4/15)* This multiplication gives us *20/60*, which simplifies to *1/3*.

So, the value of the expression *(2 - 3/4) * (2/3 - 2/5)* is 1/3.