Question

the value of Y for which the expressions Y - 15 and 2y + 1 becomes equal ?

Answer 1

simply you should equate the equation .. as this
$y - 15 = 2y + 1 \\ y = - 15 - 1 \\ y = - 16 \\ hope \: this \: will \: be \: helpful \: to \: you \: thank \: you \:$

Answer 2

y-15 = 2y+1
y-2y = 16

y = -16