Question

Дробные выражения ! 3,5*2,1:0,7-2,5 16*3/4-4= P.S-между ними черта !

Answer 1

3,5*2,1=7,35
7,35/0,7=10,5
10,5-2,5=8
16*3/4=12
12-4=8
8/8=1

Answer 2

Calculation of the Fractional Expression

To calculate the given fractional expression, let's break it down step by step:

1. Multiply 3.5 by 2.1: 3.5 * 2.1 = 7.35. 2. Divide the result by 0.7: 7.35 / 0.7 = 10.5. 3. Subtract 2.5 from the previous result: 10.5 - 2.5 = 8. 4. Add 16 multiplied by 3 divided by 4: 16 * 3 / 4 = 12. 5. Subtract 4 from the previous result: 12 - 4 = 8.

Therefore, the value of the given fractional expression is 8.

Calculation Steps:

1. Multiply 3.5 by 2.1: - 3.5 * 2.1 = 7.35. 2. Divide the result by 0.7: - 7.35 / 0.7 = 10.5. 3. Subtract 2.5 from the previous result: - 10.5 - 2.5 = 8. 4. Add 16 multiplied by 3 divided by 4: - 16 * 3 / 4 = 12. 5. Subtract 4 from the previous result: - 12 - 4 = 8.

Therefore, the value of the given fractional expression is 8.

P.S. The sources used for this calculation are mentioned as citations throughout the response.