Question

1)-11а-(5а-2)= 2) -7а+(5а-2)= 3) Спростіть вираз: х-(2х+3)+(2-0,5х)

Answer 1

Ответ:

1)-11а-(5а-2)= -11а-5а+2=-16а+2

2) -7а+(5а-2)= -7а+5а-2 = -2а-2

3) х-(2х+3)+(2-0,5х) = х-2х+3+2-0,5х = -1,5х+5

Answer 2

Ответ:

1)-11а-5а-2=-16а-2

2)-7а+5а-2=-2а-2

3)х-2х-3+2-0,5х=-1,5х-1

Answer 3

1. To simplify the expression -11a - (5a - 2):

When we distribute the negative sign inside the parentheses, it changes the signs of all the terms within the parentheses:

-11a - (5a - 2) = -11a - 5a + 2

Now, we can combine like terms:

-11a - 5a + 2 = -16a + 2

Therefore, the simplified expression is -16a + 2.

2. To simplify the expression -7a + (5a - 2):

When we remove the parentheses, we keep the signs of the terms within them:

-7a + (5a - 2) = -7a + 5a - 2

Again, we combine like terms:

-7a + 5a - 2 = -2a - 2

So, the simplified expression is -2a - 2.

3. To simplify the expression x - (2x + 3) + (2 - 0.5x):

Again, we distribute the negative sign and combine like terms:

x - (2x + 3) + (2 - 0.5x) = x - 2x - 3 + 2 - 0.5x

Now, let's combine the x terms and the constant terms separately:

(x - 2x - 0.5x) + (-3 + 2) = -1.5x - 1

Hence, the simplified expression is -1.5x - 1.