Question

teorema de Tales 8/x+1=2x-6/12?

Answer 1

Pelo Teorema de Tales:

\dfrac{12}{2x-6}=\dfrac{8}{x+1}

8(2x-6)=12(x+1)

2(2x-6)=3(x+1)

4x-12=3x+3

4x-3x=12+3

x=15.