(1 18/25 - 9,12 - 7,4 * (-6 1/3)) : 5 1/3=7,4

1) 7,4 * (-6 1/3)=(74/10)*(-19/3)=-703/15

2) (1 18/25) - 9,12=(43/25)-(912/100)=(172/100)-(912/100)=-740/100=-37/5

3) -37/5-(-703/15)=(-111/15)+(703/15)=592/15

4) (592/15)÷(5 1/3)=(592/15)÷(16/3)=(592/15)*(3/16)=37/5=7,4

(-6 7/8 + 1,375 - 5 1/2 * 0,73) : (- 1,73)=5,5

1) (5 1/2) * 0,73=5,5*0,73=4,015

2) (-6 7/8) + 1,375=-6,875+1,375=-5,5

3) -5,5-4,015=-9,515

4) -9,515÷(- 1,73)=5,5