\[3x+1=10\]
1
Subtract 11 from both sides.
3x=10−13x=10-1

2
Simplify  10−110-1  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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