Question

Alguien me ayuda porfavor ;-c!?

Answer 1

Respuesta:

$\frac{3}{4}$

$\frac{17}{8}$

$\frac{5}{7}$

Explicación paso a paso:

es pero que trayende

Answer 2

Respuesta:

$\frac{3}{6} + \frac{1}{4} = \frac{(3 \times 4) + (6 \times 1)}{6 \times 4} = \frac{12 + 6}{24} = \frac{18}{24} = \frac{3}{4}$

$\frac{7}{8} + \frac{5}{4} = \frac{(7 \times 4) + (8 \times 5)}{8 \times 4} = \frac{28 + 40}{32} = \frac{68}{32} = \frac{17}{8}$

$\frac{2}{7} + \frac{3}{7} = \frac{5}{7}$

$\frac{3}{4} + \frac{3}{5} = \frac{(3 \times 5) + (4 \times 3)}{4 \times 5} = \frac{15 + 12}{20} = \frac{27}{20}$

$\frac{4}{5} + \frac{4}{3} = \frac{(4 \times 3) + (5 \times 4)}{5 \times 3} = \frac{12 + 20}{15} = \frac{32}{15}$

$\frac{3}{6} + \frac{1}{4} = \frac{(3 \times 4) + (6 \times 1)}{6 \times 4} = \frac{12 + 6}{24} = \frac{18}{24} = \frac{3}{4}$

$\frac{2}{5} + \frac{1}{3} + \frac{2}{15} = x \\ 15( \frac{2}{5} + \frac{1}{3} + \frac{2}{15} ) = 15x \\ \frac{30}{5} + \frac{15}{3} + \frac{30}{15} = 15x \\ 6 + 5 + 2 = 15x \\ 13 = 15x \\ \frac{13}{15}$

$\frac{2}{5} + \frac{3}{10} + \frac{1}{2} = x \\ 10( \frac{2}{5} + \frac{3}{10} + \frac{1}{2} ) = 10x \\ \frac{20}{5} + \frac{30}{10} + \frac{10}{2} = 10x \\ 4 + 3 + 5 = 10x \\ 12 = 10x \\ \frac{12}{10} = x \\ \frac{6}{5} = x$

$1 \frac{4}{5} + 1 \frac{3}{4} = \frac{9}{5} + \frac{7}{4} = \frac{(9 \times 4) + (5 \times 7)}{5 \times 4} = \frac{36 + 35}{20} = \frac{71}{20}$