Question

I thought of a number, doubled it and then deducted 19 from it. The product of this difference
when multiplied by 6, became 126. What was the number I thought of ?
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Answer 1

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Answer 2

Answer:

let the number I thought is x

then ,6(2x-19)=126

12x-114=126

12x=126+114÷240

x=240/12=20