\[2x+9=5\]
1
Subtract 99 from both sides.
2x=5−92x=5-9

2
Simplify  5−95-9  to  −4-4.
2x=−42x=-4

3
Divide both sides by 22.
x=−42x=-\frac{4}{2}

4
Simplify  42\frac{4}{2}  to  22.
x=−2x=-2

Done

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