Question

7|-х|-4|3у-3,4| х=-4; у=0,9​

Answer 1

28-4-0,7=23,3

---------------------

Answer 2

To evaluate the expression 7|-x|-4|3y-3,4| when x = -4 and y = 0.9, we substitute the given values into the expression.

First, let's substitute x = -4:

7|-(-4)|-4|3y-3,4|

Simplifying the expression:

7|4|-4|3y-3,4|

Next, let's substitute y = 0.9:

7|4|-4|3(0.9)-3,4|

Simplifying further:

7|4|-4|2.7-3.4|

Now, we need to evaluate the absolute values:

7(4) - 4(2.7 - 3.4)

Multiplying and simplifying:

28 - 10.8 + 13.6

Combining like terms:

28 - 10.8 + 13.6 = 31.8

Therefore, when x = -4 and y = 0.9, the value of the expression 7|-x|-4|3y-3,4| is 31.8.