<human>:  If you double a number and add 5 to the result, then that's 20 more than half of the original number. What's the original number?
<bot>: Define a variable ** Let x be the original number.
Write an equation ** 2*x+5=20+x/2
Simplify ** 2*x-x/2=15
Simplify ** 4*x-x=30
Simplify ** 3*x=30
Simplify ** x=<<10=10>>10
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