1)
a) -7/5 * 7/8 = -49/40= -1 i 9/40
b) (-39/5):(-13/4)= 39/5:13/4= 39/5*4/13= 3/5*4= 12/5= 2 i 2/5
c) 1,6*5,04= 8,064
d) -(0,063:0,7)= -0,09
2)
a) 81-45:9= 81-5= 76
b) 15/7*4*2/3+18/5:6/5= 5/7*4*2+18/5*5/6= 40/7+3= 61/7= 8 i 5/7
c) -3/10*2,25:19,2= -0,675:19,2= -9/256
3)
475,328= 475,3
901,78462= 901,785
