Question

y+y = 2y true or false

Answer 1

$\huge\mathcal\blue{\star{\underline{\underline{True}}}}$

y+y = 2y

Answer 2

$\sf \blue{y + y = 2y}$

It is true because when we add y + y we get 2y.

Other example is a + a + a = 3a because we add three a and the result is 3a.