If 6 is subtracted from 3 times a certain number and the result is 15 more than twice the number then find the number?
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the equation is
3x-6=2x+15
3x-2x=15+6
x=21
the number is 21
3x-6=2x+15
3x-2x=15+6
x=21
the number is 21
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