Răspuns:
a= 1,4 *4,1 +3.9 -1.2 = 5.74 +2,7= 8.44 a=8,44
b= 1,13*50 - (46-34,4) - (20,9)²⁰: (20,9)¹⁹= 56.5 -11,6 -20,9¹=
b= 24
(a+b):2= (8,44+24):2 =32.44 :2 = 16,22
Ma=16,22