Question

2m-n-(6m-4n+4,7) и найдите его значение при m=-1,5; n=4

Answer 1

2m-n-(6m-4n+4,7) = 2m-n-6m+4n-4.7= -4m+3n-4.7

При m=-1,5; n=4

-4*-1.5+3*4-4.7=6+12-4.7=13.3

Answer 2

To find the value of the expression 2m - n - (6m - 4n + 4,7) when m = -1.5 and n = 4, we can simply substitute these values into the expression and perform the calculations step by step.

Let's begin:

1. Replace m with -1.5 and n with 4: 2(-1.5) - 4 - (6(-1.5) - 4(4) + 4,7)

2. Perform the calculations inside the parentheses: -3 - ( -9 - 16 + 4,7)

3. Continue simplifying the expression: -3 - ( -21.3)

4. Now, evaluate the expression inside the second set of parentheses: -3 + 21.3

5. Finally, subtract the result from the first set of parentheses from the -3: -3 + 21.3 = 18.3

So, the value of the expression 2m - n - (6m - 4n + 4,7) when m = -1.5 and n = 4 is 18.3.