You can use the fact that equivalent equations are such that one equation can be obtained by performing some operations(which doesn't break equality) on the other equation and vice versa.
The equivalent equation to
is 
<h3>What are equivalent equations?</h3>
Equivalent equations are such that one equation can be obtained by performing some operations(which doesn't break equality) on the other equation and vice versa.
<h3>How to get the equivalent equation of the given equation?</h3>
The given equation is

Subtracting 4 from both sides, we get

Thus, one equivalent equation to the given equation is 
The equivalent equation to
is 
Learn more cases of equivalent equations here:
brainly.com/question/14332869