Question

halla la solucion de cada ecuacion
a) x+3 = 8x +12
b) 3x+5x=x +8
c) 5x - 10+15=3x+x
d) 2x+7x-10=12-15x
e) 6-3x+4=6x-13

Answer 1

a) x + 3 = 8x  + 12 => x - 8x = 12 - 3 => -7x = 9 => x = - (9/7) => Respuesta.

b) 3x + 5x = x + 8 => 8x - x = 8 => 7x = 8 => x = 8/7 => Respuesta.

c) 5x - 10  + 15 = 3x + x => 5x + 5 = 4x => 5x - 4x = -5 => x = -5 =>Respuesta.

d) 2x + 7x - 10 = 12 - 15x => 9x - 10 = 12 - 15x => 9x + 15x = 12 + 10 => ...
=> 24x = 22 => x = 22/24 => x = 11/12 => Respuesta.

e) 6 - 3x + 4 = 6x - 13 => -3x - 6x = -13 -6 - 4 => -9x = -23 => x = -23/-9 =>
=> x = 23/9 => Respuesta.