a: 2x-1=0
=>2x=1
=>\(x=\dfrac{1}{2}\)
b: 2-5x=0
=>5x=2
=>\(x=\dfrac{2}{5}\)
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a: 2x-1=0
=>2x=1
=>\(x=\dfrac{1}{2}\)
b: 2-5x=0
=>5x=2
=>\(x=\dfrac{2}{5}\)