Question

respondam pelo amor de deus:
a) (- 8/9) • (+ 4/3) =
b) (-2,25) • (-1,4) =
c) (-0,23) • (+1/5) =
d) (+13/15) • (-3/7) =
e) (+0,2) • (-1/4) =
f) (+10,5) • (-8,4) =
g) (-23/4) • (-1/7) =
h) (-0,12) • (-1/10) =

Answer 1

a) (- 8/9) • (+ 4/3) =

-8/9 x 4/3 = -32/27

b) (-2,25) • (-1,4) =

3,15

c) (-0,23) • (+1/5) =-

( -23/100) x 1/5

=23/500 ou -0,046

d) (+13/15) • (-3/7)

113/5 x 1/7

13/35

e) (+0,2) • (-1/4) =

1/5 x 1/4

1/20

f) (+10,5) • (-8,4)

(  10,5 x 8,4)

-88,2

g) (-23/4) • (-1/7) =

23/4 x 1/7

23/28

h) (-0,12) • (-1/10) =

( - 3/25) x ( - 1/ 10)

3//25 x 1/10

3/250