Question

Срочно плиз 6 классссс

Answer 1

1)(-3,4-6,1)=-9,5=-19/2
2)( 1 41/42-2 5/21)= 83/42-47/21=-11/42
3)-19/2*1/19=-1/2
4)-11/42*4/7=-22/147
5)-1/2-22/147=-191/294