Question

Efetue as multiplicações:

a)(+1/5).(+4/3)= c)(-3/2).(-5/7)=

b)(+4/9).(7/5)= d)(-1/5).(+1/4)=

e)(+2/3).(-1/3)= f)(-5/8).(4/3)=

g)(+4/5).(-1/3)= h)(-3/5).(-7/4)


Cálculo pfv

Answer 1

a)(+1/5).(+4/3)= (1.4)/(5.3) 4/15

c)(-3/2).(-5/7)= (-3.-5)/(2.7) = 15/14

b)(+4/9).(-7/5)= (-4.7)/(9.5) = -28/45

d)(-1/5).(+1/4)= (-1.1)/(5.4) = -1/20

e)(+2/3).(-1/3)= (2.-1)/(3.3) = -2/9

f)(-5/8).(4/3)= (-5.4)/(8.3) = -20/24 (÷4) = -5/6

g)(+4/5).(-1/3)= (4.-1)/(5.3) = -4/15

h)(-3/5).(-7/4) = (-3.-7)/(5.4) = 21/20