A) O dobro de 2/15 B) A metade de 9/10 C) O triplo de 1/2.4/3 D) Dois quintos de 5/12 E) três quartos de 8/7.1/7
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a) 2/15x2= 4/15
b) 9/10x 1/2=9/20
c) 1/2x4/3x3 =1x4x3/2x3=2
d) 5/12x2/5=10/60=1/6
e)8x7x1/7x3/4=8x1x3/7x7x4=24/196= 6/49
b) 9/10x 1/2=9/20
c) 1/2x4/3x3 =1x4x3/2x3=2
d) 5/12x2/5=10/60=1/6
e)8x7x1/7x3/4=8x1x3/7x7x4=24/196= 6/49
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