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The product of a number and 3 of that number and six is the same as the sum

User Hany Habib
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The product of a number and 3:

Let's call this number x, so the product of this number and 3 would be 3x.

This product is equal to the sum of the number and six => x+6

Therefore:

3x = x+6
X=3
User PajLe
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