Question

1.11/12-4/7= 2.2/3-5/16= 3.1/4+11/12= 4.1/3+7/9= 5.5/12*2/15= 6.2/5*5/7= 7.5*8/9= 8.9/10*2/5*5/7= Решительно пожалуйста,заранее спасибо

Answer 1

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346
78
90
5
65
76
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Answer 2

1.

To solve the equation 1.11/12 - 4/7, we need to find a common denominator for the fractions. The least common multiple of 12 and 7 is 84.

1.11/12 can be rewritten as (1.11 * 7)/(12 * 7) = 7.77/84 4/7 can be rewritten as (4 * 12)/(7 * 12) = 48/84

Now we can subtract the fractions: 7.77/84 - 48/84 = (7.77 - 48)/84 = -40.23/84

2.

To solve the equation 2.2/3 - 5/16, we need to find a common denominator for the fractions. The least common multiple of 3 and 16 is 48.

2.2/3 can be rewritten as (2.2 * 16)/(3 * 16) = 35.2/48 5/16 remains the same

Now we can subtract the fractions: 35.2/48 - 5/16 = (35.2 - 5)/48 = 30.2/48

3.

To solve the equation 3.1/4 + 11/12, we need to find a common denominator for the fractions. The least common multiple of 4 and 12 is 12.

3.1/4 remains the same 11/12 can be rewritten as (11 * 1)/(12 * 1) = 11/12

Now we can add the fractions: 3.1/4 + 11/12 = (3.1 * 3)/(4 * 3) + 11/12 = 9.3/12 + 11/12 = (9.3 + 11)/12 = 20.3/12

4.

To solve the equation 4.1/3 + 7/9, we need to find a common denominator for the fractions. The least common multiple of 3 and 9 is 9.

4.1/3 can be rewritten as (4.1 * 3)/(3 * 3) = 12.3/9 7/9 remains the same

Now we can add the fractions: 12.3/9 + 7/9 = (12.3 + 7)/9 = 19.3/9

5.

To solve the equation 5.5/12 * 2/15, we can simply multiply the fractions:

5.5/12 * 2/15 = (5.5 * 2)/(12 * 15) = 11/36

6.

To solve the equation 6.2/5 * 5/7, we can simply multiply the fractions:

6.2/5 * 5/7 = (6.2 * 5)/(5 * 7) = 31/7

7.

To solve the equation 7.5 * 8/9, we can multiply the whole number by the fraction:

7.5 * 8/9 = 60/9 = 6.67

8.

To solve the equation 8.9/10 * 2/5 * 5/7, we can simply multiply the fractions:

8.9/10 * 2/5 * 5/7 = (8.9 * 2 * 5)/(10 * 5 * 7) = 89/70 = 1.27