Question

-4(7a-4b)-6(-4a+3b) a= - 0.2 b=0.3

Answer 1

Ответ:

Решение и ответ можно увидеть на фотографии.

Answer 2

To evaluate the expression -4(7a-4b)-6(-4a+3b) when a = -0.2 and b = 0.3, you'll substitute these values into the expression and perform the calculations step by step:

1. Replace a with -0.2 and b with 0.3:

-4(7(-0.2) - 4(0.3)) - 6(-4(-0.2) + 3(0.3))

2. Perform the calculations inside the parentheses:

-4(-1.4 - 1.2) - 6(0.8 + 0.9)

3. Continue simplifying:

-4(-2.6) - 6(1.7)

4. Multiply the constants:

-(-10.4) - 10.2

5. Finally, subtract the values:

10.4 - 10.2 = 0.2

So, the value of the expression when a = -0.2 and b = 0.3 is 0.2.