Răspuns:
Explicație pas cu pas:
a)
30(8/3 + 35/10) = 30(8/3 + 7/2) = 30(16/6 + 21/6) = 30*37/6 = 5*37 = 185
x = 185*0,2:37/10 = 185*2/10*10/37 = 10
b)
2,5 - 5/3 = 25/10 - 5/3 = 5/2 - 5/3 = 15/6 - 10/6 = 5/6
(5/6)^2 = 25/36
x = 1,2*5/6:5/24 = 12/10 * 5/6 *24/5 = 24/5 = 4,8
