Question

-4(a-b)+2(3a-b) При a= -1,5 , b= -1

Answer 1

Ответ:

-4a+4b+6а-2b

2a+2b

2*(-1,5)+2*(-1)

-3-2=-5

Answer 2

To evaluate the expression -4(a-b) + 2(3a-b) when a = -1.5 and b = -1, simply substitute the values of a and b into the expression and perform the calculations step by step:

-4(a - b) + 2(3a - b) = -4(-1.5 - (-1)) + 2(3(-1.5) - (-1))

Now, simplify the terms inside the parentheses:

= -4(-0.5) + 2(-4.5 + 1) = 2 + 2(-3.5) = 2 - 7 = -5

So, when a = -1.5 and b = -1, the expression -4(a-b) + 2(3a-b) evaluates to -5.