5/9+(a-2/9)=5/6 решите Пппппжжжжжжж

Question

5/9+(a-2/9)=5/6
решите
Пппппжжжжжжж

Answer 1

5/9+(a-2/9)=5/6
а-2/9=5/6 - 5/9
a-2/9=(15-10)/18
a-2/9=5/18
a=5/18 + 2/9
a= (5+4)/18
a=9/18
a=1/2
a= 0,5

Answer 2

5\9 + ( а -2\9 ) = 5\6
а -2\9 = 5\6 -5\9
5\6 - 5\9 = 15\18 - 10\18 =5\18
а - 2\9 = 5\18 
а = 5\18 + 2\9 
5\18 + 2\9 = 5\18 +4\18 = 9\18 =1\2
а = 1\2