3x−4=53x-4=5
1
Add 44 to both sides.
3x=5+43x=5+4

2
Simplify  5+45+4  to  99.
3x=93x=9

3
Divide both sides by 33.
x=93x=\frac{9}{3}

4
Simplify  93\frac{9}{3}  to  33.
x=3x=3

Done

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