Question

ayuda estoy bien mensa no se las fracciones​

Answer 1

Explicación paso a paso:

Suma y resta de fracciones:

1.

$\frac{2}{3} + \frac{3}{4}=\frac{(2)(4) + (3)(3) }{12} =\frac{8+9}{12} =\frac{17}{12}$

2.

$\frac{5}{8} + \frac{2}{5}=\frac{(5)(5) + (2)(8) }{40} =\frac{25+16}{40} =\frac{41}{40}$

3.

$\frac{4}{6} + \frac{1}{2}=\frac{(4)(1) + (1)(3) }{6} =\frac{4+3}{6} =\frac{7}{6}$

4.

$\frac{6}{9} - \frac{3}{5}=\frac{(6)(5) - (3)(9) }{45} =\frac{30-27}{45} =\frac{3}{45} =\frac{1}{15}$

5.

$\frac{6}{10} - \frac{2}{7}=\frac{(6)(7) - (2)(10) }{70} =\frac{42-20}{70} =\frac{22}{70} =\frac{11}{35}$

6.

$\frac{5}{8} - \frac{1}{2}=\frac{(5)(1) - (1)(4) }{8} =\frac{5-4}{8} =\frac{1}{8}$

Multiplicación y división de fracciones

1.

$\frac{5}{8}\times \frac{3}{5}=\frac{5 \times 3}{8 \times 5}=\frac{15}{40} =\frac{3}{8}$

2.

$\frac{3}{7}\times \frac{1}{3}=\frac{3 \times 1}{7 \times 3}=\frac{3}{21} =\frac{1}{7}$

3.

$\frac{8}{9}\times \frac{4}{8}=\frac{8 \times 4}{9 \times 8}=\frac{32}{72} =\frac{4}{9}$

4.

$\frac{5}{3}\div \frac{2}{7} = \frac{5}{3}\times \frac{7}{2} = \frac{5 \times 7}{3 \times 2} = \frac{35}{6}$

5.

$\frac{1}{3}\div \frac{4}{9} = \frac{1}{3}\times \frac{9}{4} = \frac{1 \times 9}{3 \times 4} = \frac{9}{12} = \frac{3}{4}$

6.

$\frac{16}{9}\div \frac{4}{1} = \frac{16}{9}\times \frac{1}{4} = \frac{16 \times 1}{9 \times 4} = \frac{16}{36} = \frac{4}{9}$