Question

-6+9x+15-2x=7+14x+18-3x

Answer 1

Respuesta:

-6+9x+15-2x=7+14x+18-3x

7x+9=11x+25

-25+9 = 11x-7x

-16 = 4x

-4 = x

Answer 2

- Solución:

• Resolvemos la ecuación:

-6 + 9x + 15 - 2x = 7 + 14x + 18 - 3x

9 + 7x = 25 + 11x

9 - 25 = 11x - 7x

-16 = 4x

-16 : 4 = x

-4 =x

• Comprobamos:

-6 + 9x + 15 - 2x = 7 + 14x + 18 - 3x

-6 + 9 . (-4) + 15 - 2 . (-4) = 7 + 14 . (-4) + 18 - 3 . (-4)

-6 + (-36) + 15 - (-8) = 7 + (-56) + 18 - (-12)

-6 - 36 + 15 + 8 = 7 - 56 + 18 + 12

-42 + 15 + 8 = -49 + 18 + 12

-27 + 8 = -31 + 12

-19 = -19