Question

3/4 + 1/8=
3/4 + 1/2=
3 2/6 - 2 1/3=
2/3 - 1/2=
1 1/4 - 1/2=
1 1/2 + 3 3/4=

Answer 1

Explicación paso a paso:

$a) \\ \frac{3}{4} + \frac{1}{8} = \frac{6 + 1}{8} = \frac{7}{8} \\ \\ b) \\ \frac{3}{4} + \frac{1}{2} = \frac{3 + 2 }{4} = \frac{5}{4}$

$c)\\ 3 \frac{2}{6} - 2 \frac{1}{3} = \\ \\ ( \frac{6 \times 3 + 2}{6} ) - ( \frac{3 \times 2 + 1}{3} ) = \\ \\ \frac{20}{6} - \frac{7}{3} = \\ \\ \frac{10}{3} - \frac{7}{3} = \frac{3}{3} = 1$

$d) \\ \frac{2}{3} - \frac{1}{2} = \frac{4 - 3}{6} = \frac{1}{6} \\ \\ e) \\ 1 \frac{1}{4} - \frac{1}{2} = \\ \\ ( \frac{4 \times 1 + 1}{4} ) - \frac{1}{2} = \\ \\ \frac{5}{4} - \frac{1}{2} = \frac{5 - 2}{4} = \frac{3}{2} \\ \\ f) \\ 1 \frac{1}{2} + 3 \frac{3}{4} = \\ \\ ( \frac{2 \times 1 + 1}{2} ) + \frac{4 \times 3 + 3}{4} = \\ \\ \frac{3}{2} + \frac{15}{4} = \frac{6 + 15}{4} = \frac{21}{4}$

Answer 2

Ejercicio 1

3/4 + 1/8 =

6/8 + 1/8 =

7/8

Ejercicio 2

3/4 + 1/2 =

3/4 + 2/4 =

5/4

Ejercicio 3

3 2/6 - 2 1/3 =

20/6 - 7/3 =

20/6 - 14/6 =

6/6 =

1

Ejercicio 4

2/3 - 1/2 =

4/6 - 3/6 =

1/6

Ejercicio 5

1 1/4 - 1/2 =

5/4 - 1/2 =

5/4 - 2/4 =

3/4

Ejercicio 6

1 1/2 + 3 3/4 =

3/2 + 15/4 =

6/4 + 15/4 =

21/4   ó   5 1/4