\[3x+3=9\]
1
Subtract 33 from both sides.
3x=9−33x=9-3

2
Simplify  9−39-3  to  66.
3x=63x=6

3
Divide both sides by 33.
x=63x=\frac{6}{3}

4
Simplify  63\frac{6}{3}  to  22.
x=2x=2

Done

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