Question

me ayudan por favor
a)3/4 + 2/3 + 1/2

b)5/6 + 2/4 - 6/2

c)3 4/6 + 2/5

d)2/3 - 4 2/5

Answer 1

$\frac{3}{4} + \frac{2}{3} + \frac{1}{2} = \frac{3(3) + 2(4) + 1(6)}{12} = \frac{9 + 8 + 6}{12} \\ \frac{23}{12}$

$\frac{5}{6} + \frac{2}{4} - \frac{6}{2} = \frac{5(2) + 2(3) - 6(6)}{12} = \frac{10 + 6 - 36}{12} \\ \frac{ - 20}{12} = \frac{ - 5}{3}$

$3 \frac{4}{6} + \frac{2}{5} = \frac{22}{6} + \frac{2}{5} = \frac{22(5) + 2(6)}{30} = \frac{110 + 12}{30} \\ \frac{122}{30} = \frac{61}{15}$

$\frac{2}{3} - 4 \frac{2}{5} = \frac{2}{3} - \frac{22}{5} = \frac{2(5) - 22(3)}{15} = \frac{10 - 66}{15} \\ \frac{ - 56}{15}$