Question

(1/30 + 5/6)-(-3,9-2,2)-5,3= ????

Answer 1

(1/30+5/6)-(-3,9-2,2)-5,3=(1/30+25/30)+6,1-5,3=26/30+61/10-53/10=(26+183-159)/30=50/30=5/3=1 2/3

Answer 2

(1/30-5/6)-(-3.9-2.2)-5.3=(1/30-25/30)-(-6.1)-5.3=-24/30+6.1-5.3=-12/15+0.8=-0.8+0.8=0