Question

(1,42-(3,22)):(-0,8)+(-6)•(-0,7)=

Answer 1

(1,42-(3,22)):(-0,8)+(-6)•(-0,7)

$- 1.8 \div ( - \frac{4}{5}) + 4.2$

$- \frac{9}{5} \div ( - \frac{4}{5}) + \frac{21}{5}$

$\frac{9}{5} \times \frac{5}{4} + \frac{21}{5}$

$9 \times \frac{1}{4} + \frac{21}{5}$

$\frac{9}{4} + \frac{21}{5}$

Ответ:

$\frac{129}{20}$

Answer 2

Let's break down the expression step by step:

1. Start with the expression inside the parentheses: (1, 42 - (3, 22)) Here, (3, 22) is subtracted from (1, 42).

   (1, 42) - (3, 22) = (1 - 3, 42 - 22) = (-2, 20)

2. Next, we have the expression (-0, 8). Since -0 is the same as 0, this simplifies to (0, 8).

3. Now, multiply (-6) by (-0.7): (-6) * (-0.7) = 4.2

4. Finally, add the results of the previous steps together: (-2, 20) + (0, 8) + 4.2 = (-2 + 0 + 4.2, 20 + 8) = (2.2, 28)

So, the result of the expression is (2.2, 28).