Question

Justify L+L = L and L-L= L

Answer 1

Length + Length = Length

Eg. 4m + 2m = 6m

Length - Length = Length

Eg. 6m - 4m = 2m

Hope it helps.........

Answer 2

Answer:

$length \: + \: length \: = \: length \\ eg \: 2m \: + \: 6m \: = \: 8m \\ \\ \\ length - \: length \: = \: length \\ eg \: 8m \: - \: 2m \: = \: 6m \:$