Question

1) (0.9-5+5-0,6)-(0.7-2+3 -0.7); 2) (18-2,5-2,5-9)+(8-5.6 -3,1-8); 3) (8.61-7+7-0,13)-(2,26 4+ 3-2,26).​

Answer 1

1)-0.7

2)-4.7

3)5.476

Надеюсь правильно.

Answer 2

Let's solve each expression step by step:

1. (0.9-5+5-0.6)-(0.7-2+3-0.7)

First, we can simplify the expression within the parentheses on both sides:

(0.9-5+5-0.6) becomes -3.7

(0.7-2+3-0.7) becomes 0

Now, we can substitute these values back into the original expression:

-3.7 - 0 = -3.7

Therefore, the result is -3.7.

2. (18-2.5-2.5-9)+(8-5.6-3.1-8)

Again, let's simplify the expression within the parentheses on both sides:

(18-2.5-2.5-9) becomes 4

(8-5.6-3.1-8) becomes -8.7

Substituting these values back into the original expression:

4 + (-8.7) = -4.7

Therefore, the result is -4.7.

3. (8.61-7+7-0.13)-(2.26+4+3-2.26)

Let's simplify the expression within the parentheses:

(8.61-7+7-0.13) becomes 8.48

(2.26+4+3-2.26) becomes 6

Substituting these values back into the original expression:

8.48 - 6 = 2.48

Therefore, the result is 2.48.

To summarize:

1. (0.9-5+5-0.6)-(0.7-2+3-0.7) = -3.7
2. (18-2.5-2.5-9)+(8-5.6-3.1-8) = -4.7
3. (8.61-7+7-0.13)-(2.26+4+3-2.26) = 2.48