Hey there!
Like terms are "from the same family"
Let me clarify.
For example. we have an expression "2t+12h-6h"
In this case, 12h and -6h are like terms and 2t and 12h are not like terms.
Here's another example:
r+a-y+4+9-1
The like terms are:
4, 9, and -1
Now that we know what like terms are, let's identify the like terms in the given expression.
The expression is:
What are the like terms?
That's right, 12n and 6n:
Hence, the answer is
Hope everything is clear.
Let me know if you have any other questions; if so, please comment.
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