a) 6+30-2=34
b) 4:2=2
c) 4(1.5-2)=-2
d) 8/10+9/6=2.3
Zad.3
a) 2*3 + 7,5*4-2= 6+ 30-2= 34
b)(-7+11)/ 2= 4/2=2
c)4(1,5-2*1)= 4* (-0,5)= -2
d) 2 4/5 :2 + 3 :2/5= 14/5 * 1/2 + 3 *5/2= 7/5 + 15/2 = 1 2/5+ 7 1/2= 1 4/10 + 7 5/10= 8 9/10
