Question

Como resuelvo las siguientes sumas y restas de fracciones 6/8-3/4 8/6-4/3 4/10 - 2/5 9/12 3/4 3/4 12/16 !

Answer 1

Para resolver restas:
$\frac{a}{b} - \frac{c}{d} \\ \\ \frac{(a \times d) -(b \times \: c ) }{b \times d}$

●6/8 -3/4

$\frac{6}{8} - \frac{3}{4} \\ \\ \frac{(6 \times 4) - (8 \times 3)}{8 \times 4} \\ \\ \frac{24 - 24}{32} \\ \\ \frac{0}{32} = 0$
●8/6-4/3

$\frac{8}{6} - \frac{4}{3} \\ \\ \frac{(8 \times 3) - (6 \times 4)}{6 \times 3} \\ \\ \frac{24 - 24}{18} \\ \\ \frac{0}{18} = 0$
●4/10 -2/5

$\frac{4}{10} - \frac{2}{5} \\ \\ \frac{(4 \times 5) - (2 \times 10)}{10 \times 5} \\ \\ \frac{20 - 20}{50} \\ \\ \frac{0}{50} = 0$
●9/12-3/4

$\frac{9}{12} - \frac{3}{4} \\ \\ \frac{(9 \times 4) - (12 \times 3)}{12 \times 4} \\ \\ \frac{36 - 36}{48} \\ \\ \frac{0}{48} = 0$
●3/4-12/16

$\frac{3}{4} - \frac{12}{16 } \\ \\ \frac{(3 \times 16) - (12 \times 4)}{16 \times 4} \\ \\ \frac{48 - 48}{64} \\ \\ \frac{0}{64} = 0$