Question

Doy 30 puntos

Resolver
a)3x+5= x-3
b)x-2=7
c)11-4x=x+5
d)2x-1=2x+4
e)5x-2=10x-4
f)3x+2=6x+4

Answer 1

a)
$3x + 5 = x - 3 \\ 3x - x = - 3 - 5 \\ 2x = - 8 \\ x = - \frac{8}{2} = - 4$

b)
$x - 2 = 7 \\ x = 7 + 2 = 9$

c)
$11 - 4x = x + 5 \\ 11 - 5 = x + 4x \\ 6 = 5x \\ \frac{6}{5} = x$

e)
$5x - 2 = 10x - 4 \\ - 2 + 4 = 10x - 5x \\ 2 = 5x \\ \frac{2}{5} = x$

f)
$3x + 2 = 6x + 4 \\ 3x - 6x = 4 - 2 \\ - 3x = 2 \\ x = - \frac{2}{3}$

en el d) hay un error, revisalo