The correct option is A LHS = RHS
Equations are mathematical statements where the expressions on both LHS and RHS are equal.
Let's say we have 4+5 = 9.
Here LHS is 4+5 which is equal to 9.
and RHS = 9
Here, LHS = RHS.
As both sides are equal, 4+5 = 9 is an equation.
Similarly, x+5=7 is also an equation in which LHS = RHS for a particular value of x.