Question

f $3y = y + 2$, then $2y = $
A.$1$
B.$2$
C.$3$
D.$4$

Answer 1

Hint: Shift the variables which are the same to any one side, and solve the equation for that variable.

Complete step-by-step answer:
Shift the variables of $y$ onto left hand side,
$
   \Rightarrow 3y = y + 2 \\
   \Rightarrow 3y - y = 2 \\
   \Rightarrow 2y = 2 \\
 $
So, the value of $2y$ is $2$.
Option B is correct.

Note: When shifting the variable from one side to another side i.e. LHS to RHS or RHS to LHS the sign of the value and variable changes.