Question

7/2+2/3=
2/1+1/4=
4+1/7=
5/3+4/5=
4-1/7=
9/10-4/5=
3/2+2/3=
2/5+11/2=

Answer 1

a)7/2+2/3(fazer MMC)
7.3/2.3+2.2/3.2.
21/6+4/6
25/6=4,16

b)2/1+1/4(MMC)
2.4/1.4+1/4
8/4+1/4
9/4=2,25

c)4+1/7(MMC)
4.7/1.7+1/7
28/7+1/7
29/7=4,14

d)5/3+4/5(MMC)
5.5/3.5+4.3/5.3
25/15+12/15
37/15=2,46

e)4-1/7(MMC)
4.7/1.7-1/7
28/7-1/7
27/7=3,85

f)9/10-4/5(MMC)
9/10-4.2/5.2
9/10-8/10
1/10=0,1

g)3/2+2/3(MMC)
3.3/2.3+2.2/3.2
9/6+4/6
13/6=2,16

h)2/5+11/2(MMC)
2.2/5.2+11.5/2.5
4/10+55/10
59/10=5,9