Question

-4 * (5a+3b)+5*(4a-2k) b=-8 k=-1,5 a=-1,2

Answer 1

Ответ:-27

Пошаговое объяснение:

-4(-6-24)+5(-4,8+3)=24+96-24+15=12-39=-27

Answer 2

To calculate the expression when b = -8, k = -1.5, and a = -1.2, simply substitute these values into the given expression and perform the arithmetic.

The expression is: -4 * (5a + 3b) + 5 * (4a - 2k)

Substitute the values:

-4 * (5 * (-1.2) + 3 * (-8)) + 5 * (4 * (-1.2) - 2 * (-1.5))

Now, perform the calculations step-by-step:

-4 * (5 * (-1.2) + 3 * (-8)) = -4 * (-6 + (-24)) = -4 * (-30) = 120

5 * (4 * (-1.2) - 2 * (-1.5)) = 5 * (-4.8 - (-3)) = 5 * (-1.8) = -9

Finally, combine the results:

120 + (-9) = 111

So, when a = -1.2, b = -8, and k = -1.5, the value of the expression is 111.