\[4x-9=5\]
1
Add 99 to both sides.
4x=5+94x=5+9

2
Simplify  5+95+9  to  1414.
4x=144x=14

3
Divide both sides by 44.
x=144x=\frac{14}{4}

4
Simplify  144\frac{14}{4}  to  72\frac{7}{2}.
x=72x=\frac{7}{2}

Done

Decimal Form: 3.5

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