Determine the side length 12x+20=3x

This question has got no solution, because answer of the equation is -2.2222. You can not have side with negative lenght.

Step-by-step explanation:

12x+20=3x

12x - 3x=-20

9x=-20

x=-2.222222

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

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