Question

2- Reduza as frações ao mesmo denominador, faça os cálculos e dê o resultado com a fração mais simples.
a) 2/5 + 3/10
b) 2/3 + 7/6
c) 2/9 + 3/4
d) 1/3 - 1/5
e) 5/4 - 4/5
f) 3 - 2/5 ( obs : 3 = 3/1 ) ​

Answer 1

a) 2/5 + 3/10 = 4/10 + 3/10 = 7/10

b) 2/3 + 7/6 = 4/6 + 7/6 = 11/6

c) 2/9 + 3/4 = 8/36 + 27/36 = 35/36

d) 1/3 - 1/5 = 5/15 - 3/15 = 2/15

e) 5/4 - 4/5 = 25/20 - 16/20 = 9/20

f) 3 - 2/5 = 15/5 - 2/5 = 13/5

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Espero ter ajudado

Answer 2

a) 2/5 + 3/10 / 4/10 + 3/10 / 7/10

b) 2/3 + 7/6 / 4/6 + 7/6 / 11/6

c) 2/9 + 3/4 / 8/36 + 27/36 / 35/36

d) 1/3 - 1/5 / 5/15 - 3/15 / 2/15

e) 5/4 - 4/5 / 20/20 - 16/20 / 4/20 / 1/5

f) 3/1 - 2/5 / 15/5 - 2/5 / 13/5