Given expression is
[tex]m+m+m+m[/tex]We can see that the variable m is added four times.
[tex]m+m+m+m=4\text{ times of m}[/tex][tex]m+m+m+m=4m[/tex]Here 4 is the coefficient and m is the variable.
4m is the product of a coefficient and a variable
Hence the expression m+m+m+m is equivalent to 4m.
