Steps:
1) We have to keep the

's on one side. For simplification can only occur between

with each other.
2) We have to keep the number on other side. Be careful that you do not simplify it with the

.
Simply,
group the like terms and
simplify.
Methods:
=>
=>
=>
=>
=> 
or,
(do side changing)
=>
=>
=>
=> 
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HOPE THAT HELPS YOU!! :-)))