Question

Ten less than a number is twice the same number​

Answer 1

Less ten a number; 20 - 10.

10 ×2 = 20

Meaning lees 10 from 20 and multiply

Answer 2

Hi there!

First of all, let the unknown number be z.

Now, subtract 10:

z-10

This expression is equal to twice the same number:

z-10=2z

Solve this equation:

z-2z=10

-z=10

Divide both sides by -1 in order to get rid of the minus sign:

z=-10

Hope everything is clear.

Let me know if you have any questions!

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:-)