Question

how we can check the equation

Answer 1

By putting the value which comes on solving the equation, if both lhs and rhs comes equal then your answer is correct.

Hope that it will help you

Answer 2

$\huge\underline\red{HELLO/MATE}$You can check the equation by putting the value of the given x variable by putting the values on RHS and LHS.
If they are equal your answer is right.