\[2x+5=4\]
1
Subtract 55 from both sides.
2x=4−52x=4-5

2
Simplify  4−54-5  to  −1-1.
2x=−12x=-1

3
Divide both sides by 22.
x=−12x=-\frac{1}{2}

Done

Decimal Form: -0.5

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