2x3=92x-3=9

1
Add 33 to both sides.
2x=9+32x=9+3

2
Simplify  9+39+3  to  1212.
2x=122x=12

3
Divide both sides by 22.
x=122x=\frac{12}{2}

4
Simplify  122\frac{12}{2}  to  66.
x=6x=6

Done

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