Question

Efectueaza:
a)7/10-4/10+13/10-8/10=??
b)(9/10-7/6)+(9/6-7/6)
Va rog urgent dau coroana

Answer 1

a) (7-4+13-8)/10=8/10=4/5;
b) [(27-35)/30+2/6]=
= -7/30+10/30=3/30=1/10

Answer 2

a) 7×10 - 4×10 + 13×10 -8×10= 80 70-40+130-80= 80 30+130-80=80 160-80= 80 b) (9×10-7×6) + (9×6 - 7×6) =60 (90-42) + (54 - 42) = 60 48+12= 60