Hi student, let me help you out! :)
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We are asked to simplify the expression
.

The like terms here are: 3x-2x; let's combine them:

We can't simplify this any further, because x and 5 are not like terms.
Remember this...

Hope it helps you out! :D
Ask in comments if any queries arise.
#StudyWithBrainly
~Just a smiley person helping fellow students :)