(1 2\9+1 1\6)*(2-125\42)

(1 2/9+1 1/6)*(2-125/42)=(11/9+7/6)*(84/42-125/42)=(22/18+21/18)*(-41/42)=43/18*(-41/42)=-2 251/756

(1 2\9+1 1\6)*(2-125\42)= (1 ц 4/18+1 ц 3/18)* ( 2 ц- 2 ц 41/42)=2 7/18*(-41/42)=43/18*(-41/42)=-1763/756=-2 251/756