If the sum of 13mn, −7nm, 4m and 7mn is x, then x = 14mn+4m.
True
False
Given, sum of 13mn, −7nm, 4m and 7mn is x
⟹ 13mn+(−7nm)+4m+7mn=x
⟹ 13mn +7mn - 7nm +4m=x
i.e. x = 13mn +4m
Hence the given statement is false.
Add.3mn+1,-4m-2,3+7mn