1/2a=1-1/2a tolong dibantu ya

1/2 a = 1 - 1/2a

1/2a+1/2a=1
         2/2a = 1
              a = 1

semoga bantu

1/2a =1-1/2a
1/2a+1/2a=1
1a=1
a=1/1
a=1

"maaf klo salah, semoga membantu"