jika A ditambah (+) 6/10 = 2/3 maka nilai A adalah... #tolong dibantu

A+6/10=2/3
A=2/3-6/10
A=20/30-18/30
A=2/30
A=1/15

a+6/10=2/3
a = ⅔ - 6/10
a = 20 - 18 per 30
a = 2/30
a = 1/15