1/10g-1 + 1/5g-2 =0

(5g-2) + (10g-1)/ (10g-1)(5g-2)=0

Одз: (10g-1)(5g-2)≠0

10g-1 ≠0 или 5g-2≠0

10g≠1 5g≠2

g≠1/10 g≠2/5

5g-2+ 10g-1=0

15g-3=0

15g=3

g= 3/15 = 1/5

Ответ: 1/5