\[10x-9=5\]
1
Add 99 to both sides.
10x=5+910x=5+9

2
Simplify  5+95+9  to  1414.
10x=1410x=14

3
Divide both sides by 1010.
x=1410x=\frac{14}{10}

4
Simplify  1410\frac{14}{10}  to  75\frac{7}{5}.
x=75x=\frac{7}{5}

Done

Decimal Form: 1.4

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