(-31/4+21/6)x(-22/11)-(-5/6+13/5)x(-4/5-1.2)

Question

(-31/4+21/6)x(-22/11)-(-5/6+13/5)x(-4/5-1.2)

Answer 1

=(-7,75+3,5)×(-2)+103/30×(-0,4)=8,5+1 28/75= 85/10-412/300=2138/300=7 38/300=7 19/150