Question

calcule os seguintes produtos de numeros racionais simplificando-os sempre que possível
A)-3,6.[-15/28]
B)1,3.[1+1/8]
C)-0,25.[-8/5]
D)0,6.[1/3+0,5]
E)-10.[-0,3-1/2]
F)[1+2/3].[-1+1/7]

URGENTE

Answer 1

a)-36/10.(-15/28)= 540/280=54/28=27/14

b)13/10.(8+1/8)= 13/10.9/8= 117/80

c)-25/100.(-8/5)= 200/500=2/5

d)6/10.(1/3+5/10)= 6/10.(10+5/10)= 6/10.15/10= 90/100= 9/10= 0,9

e)-10.(3/10-1/2)= -10.(3-5/10)= -10. -2/10= 20/10=2

f)(1+2/3).(-1+1/7)= (3+2/3).(-7+1/7)= 5/3.(-6/7)= -30/21= -10/7