Răspuns:
Explicație pas cu pas:
√18 = 3√2
8/3√2 + 6/√2 = 8/3√2 + 18/3√2 = 26/3√2
x = 26/3√2*√2/13 = 2/3
________
√147 = 7√3
1/√3 - 5/7√3 = 7/7√3 - 5/7√3 = 2/7√3
y = 2/7√3 : √3/14 = 2/7√3 *14/√3 = 4/3
__________
x + y = 2/3 + 4/3 = 6/3 = 2, numar natural
