1) (3,4+7)*(-1 7/18) 2) (6 2/9 -5 5/6) : -7/36 ω^

1) (3,4+7)*(-1 7/18) = - 3 5/7
3,4+7=10,4
10,4*(-1 7/18)= - 104/100*25/7= - 104/28= -3 20/28= - 3 5/7

2) (6 2/9 -5 5/6) : -7/36= - 1 3/7
6 2/9-5 5/6=6 2/18-5 15/18=5 20/18-5 15/18=5/18
5/18÷(-7/36)= - 5/18*36/7= - 10/7 = - 1 3/7