Question

AYUDENME URGENTE PORFAVOR¿¿¿¿

Answer 1

a)
(2/5) (x+4) = 4
x+4 = 4*5/2
x+4 = 10
x = 10-4
x = 6
comprobación:
(2/5)(6+4) = 4
0.4*10 = 4
4 = 4
Respuesta:
x = 6

b)
(4x/12) = x-2
(4x/12)-(12x/12) = -2
x(4-12)/12 = -2
-8x/12 = -2
x = -2*12/-8
x = -24/-8
x = 3
comprobación:
(4*3/12) = 3-2
1 = 1
Respuesta:
x = 3

c)
{(5x+1)/4} = x-2
5x+1 = 4*(x-2)
5x+1 = 4x-8
5x-4x = -8-1
x = -9
comprobación
{(5*-9)+1}/4 = x-2
{-45+1}/4 = -9-2
-44/4 = -11
Respuesta:
x = -9