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First step, you want to simplify as much as you can on the left hand side and the right hand side.

(2x+1)-(5-3x)=2(3x-2)-x **first distribute the -1 to (5-3x) and the 2 to the (3x-2)

2x+1-5+3x=6x-4-x **combine like terms

2x+3x+1-5=6x-x-4 **simplify

5x-4=5x-4

Notice, the equations have the same thing on the left and the right. This is considered an identity.

If we were to continue we find

0=0 which is true!

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