Question

$\frac{4}{7} + \frac{2}{7}$
$\frac{9}{11} - \frac{2}{11}$

$\frac{5}{8} + \frac{3}{12}$
$\frac{2}{3} + \frac{1}{2} - \frac{1}{6}$

$\frac{5}{8} + \frac{1}{15}$
$5 + \frac{2}{3}$
$\frac{1}{24} + \frac{5}{36} + \frac{1}{42}$
$\frac{7}{36} + \frac{5}{42} + \frac{1}{60}$
ajudem aí e pra minha prima​

Answer 1

Resposta:

Explicação passo a passo:

4/7 + 2/7 = 6/7

9/11 - 2/11 = 7/11

5/8 + 3/12 = 15/24 + 6/24 = 21/24 = 7/8

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

5/8 + 1/15 = (75 + 8)/120 = 83/120

5+2/3 = 15/3 + 2/3 = 17/3

1/24 + 5/36 + 1/42 = (36 + 120)/(24(36)) + 1/42 = (156(42)+24(36))/(24(36)(42))

7/36 + 5/42 + 1/60 = (7(42)+5(36))/(36(42)) + 1/60 = ((7(42)+5(36))60 + 36(42))/(36(42)(60)) = (7(60)(42)+5(60)(36)+36(42))/(36(42)(60))