Respuesta :
2/3 can equal 6/9. Then when you add them you simple add the top to the top, and the bottoms stay the same
6/9 + 7/9, which equals 15/9. This simplifies to 1 6/9, or 1 2/3
6/9 + 7/9, which equals 15/9. This simplifies to 1 6/9, or 1 2/3