1/b+1/a : a/b-b/a=.......... #yg tau psi iq nya 100 ke atas

1/b+1/a : a/b-b/a=1/b + (1+b)/a -b/a=1/b + (1+b-b)/a
1/b + 1/a= (a+b)/ab

1/b + (1/a : a/b) - b/a, 1/a x b/a = b/a^, jadi 1/b + b/a^ - b/a