Question

Найдите значения выражения. 1/2+6. 3/7, 6+4. 9/11, 2/9 +1. 8/15, 1/14+9. 3/7,7. 1/12+6, 5/7+3. 1/4

Answer 1

1)  $\frac{1}{2} + \frac{45}{7} = \frac{7+90}{14} = \frac{90}{14}$

$6= 5\frac{11}{11}$

$5 \frac{11}{11} +4 \frac{9}{11} =9 \frac{20}{11} =9+ 1\frac{9}{11} =10 \frac{9}{11}$

$\frac{2}{9} + \frac{23}{15} = \frac{18+69}{45} = \frac{87}{45}$

$\frac{1}{14} + \frac{66}{7} = \frac{1+132}{14} = \frac{134}{14}$

$7 \frac{1}{12} +5 \frac{12}{12} =12 \frac{13}{12} =12+1 \frac{1}{12} =13 \frac{1}{12}$

$\frac{7}{5} + \frac{13}{4} = \frac{28+65}{20} = \frac{93}{20}$

Answer 2

Давайте рассмотрим каждое выражение по очереди:

1. 1/2 + 6 = 0.5 + 6 = 6.5
2. 3/7 * 6 = (3/7) * 6 = 18/7
3. 6 + 4.9/11 = 6 + 0.81818... ≈ 6.81818...
4. 2/9 + 1.8/15 = (2/9) + (6/15) = (10/45) + (18/45) = 28/45
5. 1/14 + 9.3/7 = (1/14) + (27/14) = 28/14 = 2
6. 7.1/12 + 6.5/7 = (7.1/12) + (65/70) = (7.1/12) + (13/14) ≈ 0.59166... + 0.92857... ≈ 1.52023...
7. 5/7 + 3.25/4 = (20/28) + (26/28) = 46/28 = 23/14

Таким образом, значения выражений:

1. 6.5
2. 18/7
3. Примерно 6.81818...
4. 28/45
5. 2
6. Примерно 1.52023...
7. 23/14