\[10x-3=9\]
1
Add 33 to both sides.
10x=9+310x=9+3

2
Simplify  9+39+3  to  1212.
10x=1210x=12

3
Divide both sides by 1010.
x=1210x=\frac{12}{10}

4
Simplify  1210\frac{12}{10}  to  65\frac{6}{5}.
x=65x=\frac{6}{5}

Done

Decimal Form: 1.2

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