Question

(-4 2/3)* (-2 2/7)-3 1/3 * (0.4 - 3 1/5)=

(-3 3/4)*(-2 2/3)-1 1/2 : (-27)=

Answer 1

(-4 2/3)* (-2 2/7)-3 1/3 * (0.4 - 3 1/5)=
=(-14/3)*(-16/7)-10/3*(2/5-16/5)=

=(-14/3)*(-16/7)-10/3*(0,4-3,2)=
= 224/21-10/3*(-28/10)=
= 32/3-10/3*(-14/5)=
=32/3+140/15=
= 160/15+140/15=
=300/15=
= 20

(-3 3/4)*(-2 2/3)-1 1/2 : (-27)=

(-15/4)*(-8/3)-3/2*(-1/27)=

= 120/12+3/54=

=10+3/54= 

=10+1/18

=10 1/18 

Answer 2

1. (-4 2/3)* (-2 2/7)-3 1/3 * (0.4 - 3 1/5)= (-14/3 *-8/3) - 10/3 * (4/10 - 16/5)=

112/9 -10/3 * (2/5-16/5) = 112/9 - 30/9 * (-14/5) = 82/9* (-14/5 ) = (-1148/45)= (- 25i23/45)

 

2. (-3 3/4)*(-2 2/3)-1 1/2 : (-27)=(-15/4 * -8/3) - 3/2 : (-27)=120/12 -18/12 :27
120/12 - 18/12*1/27 = 120/12 - 18/324 = 1080/108-6/108=1074/108
=9i102/1074