Question

3[x-2(x-2)+3(x+5)] = -3(x+2)

Answer 1

Respuesta:

3{x^2-2x-2x+4 + 3x+15} = -3x-6

3{x^2-x+21} = -3x-6

3x^2-3x+63 = -3x-6

3x^2=-69

x^2=-23

x=√-23