52hg + 2kg = ….. hg

~Math~

52 HG + 2 KG

= 45 HG

2 KG

= 20 HG

52 HG + 20 HG

= 72 HG

52hg + 2kg = 52hg + (2×10)hg

= 52hg + 20hg

= 72hg