Question

Me ajudem
A) 3/4+1/2+2/3=
B) -3/5+1/2+1/3=
C)3/8x12/3=
D) 5/3:3/4=

Answer 1

Boa tarde 

a)   3/4 + 1/2 + 2/3

mmc(2,3,4) = 12

9/12 + 6/12 + 8/12 = 23/12 

b) -3/5 + 1/2 + 1/3

mmc(2,3,5) = 30

-18/30 + 15/30 + 10/30 = 7/30 

c) 3/8 * 12/3 

(3*12)/(8*3) = 12/8 = 3/2 

d) (5/3)/(3/4) = (5/3)*(4/3) = 20/9 

Answer 2

a) 3.4+1.2+2.3=6.9 b) -3.5+1.2+1.3=1. c) 3.8* 12.3=46.74 d) 5.3:3.4=1.558