Question

me ajudem, estou com muita dificuldade
a)4/7+1/2
b)6/5-6/9
c)3/9-3/4
d)1/11+2/9
e)8/13-5/2
f)9/4+9/11
g)7/2-4/10
h)6/7-8/3
i)13/14+16/21
j)12/15+17/20
k)11/13-13/11
l)19/15+10/23
m)27/20-19/26
n)29/31+25/33
o)37/29-27/36
p)33/41+36/30​

Answer 1

a)4/7+1/2  = (8 + 7)/14 = 15/14

b)6/5-6/9  = (54 - 30)/45 = 24/45 = 8/15

c)3/9-3/4  = (12 - 21)/36 = -9/36 = -1/4

d)1/11+2/9  = (9 + 22)/99 = 31/99

e)8/13-5/2  = (16 - 65)/26 = -49/26

f)9/4+9/11  = (99 + 36)/44 = 135/44

g)7/2-4/10  = (35 - 4)/10 = 31/10

h)6/7-8/3  = (18 - 56)/21 = -38/21

i)13/14+16/21  = (351 + 288)/378 = 639/378 = 71/42

j)12/15+17/20  = (48 + 51)/60 = 99/60 = 33/20

k)11/13-13/11  = (143 - 143)/143 = 0/143 = 0

l)19/15+10/23  = (437 + 150)/345 = 587/345

m)27/20-19/26  = (351 - 190)/260 = 161/260

n)29/31+25/33  = (957 + 775)/1023 = 1732/1023

o)37/29-27/36  = (962 - 783)/1044 = 179/1044

p)33/41+36/30​ = (990 + 1476)/1230 = 2466/1230 = 1233/615 = 411/605