9x5=109x-5=10

1
Add 55 to both sides.
9x=10+59x=10+5

2
Simplify  10+510+5  to  1515.
9x=159x=15

3
Divide both sides by 99.
x=159x=\frac{15}{9}

4
Simplify  159\frac{15}{9}  to  53\frac{5}{3}.
x=53x=\frac{5}{3}

Done

Decimal Form: 1.666667

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