Plzz puțin ajutor??Calculati media aritmetică a numerelor:a)1 supra 2,-2;b)-1 supra 4,1,-3 supra 4;c)5supra6,-1supra4,2supra3;d)1,-1,-3supra5,2supra5;e)1,-1,2supra3,3supra5,5supra6.
media aritmetică - (a+b)/2 a. (1/2+(-2))/2=1/4+2/2=1+0.25=1,25 b. (-1/4 +1-3/4)/3=-1/12-6/12+1/3=-3/12 c.(5/6-1/4+2/3)/3=((10-3+8)/12)/3=15/12/3=15/36 d. (1-1-3/5+2/5)/4=-1/5/4=-1/20 e. (1-1+2/3+3/5+5/6)/5=((20+18+25)/30)/5=63/30/5=63/150
