15,3-(-8,4)*(-7/12)-(-3,5)² помогите пж

Відповідь:

Покрокове пояснення:

To solve the expression

15.3

−

(

−

8.4

)

×

(

−

7

12

)

−

(

−

3.5

)

2

15.3−(−8.4)×(−

12

7

​

)−(−3.5)

2

, let's break it down step by step:

−

(

−

8.4

)

=

8.4

−(−8.4)=8.4

−

(

−

3.5

)

2

=

−

(

3.5

)

2

=

−

12.25

−(−3.5)

2

=−(3.5)

2

=−12.25

Now, plug these values back into the expression:

15.3

−

8.4

×

(

−

7

12

)

−

(

−

12.25

)

15.3−8.4×(−

12

7

​

)−(−12.25)

Now, let's simplify the expression:

15.3

+

8.4

×

7

12

−

(

−

12.25

)

15.3+8.4×

12

7

​

−(−12.25)

15.3

+

8.4

×

7

12

+

12.25

15.3+

12

8.4×7

​

+12.25

15.3

+

58.8

12

+

12.25

15.3+

12

58.8

​

+12.25

15.3

+

4.9

+

12.25

15.3+4.9+12.25

Now, add the numbers:

15.3

+

4.9

+

12.25

=

32.45

15.3+4.9+12.25=32.45

So,

15.3

−

(

−

8.4

)

×

(

−

7

12

)

−

(

−

3.5

)

2

=

32.45

15.3−(−8.4)×(−

12

7

​

)−(−3.5)

2

=

32.45

​