Question

Resuelva las ecuaciones
2x-1=5x+8
3+3x-1=x+2+2x
2-x=x-7
5-2(1-x)=2x-3
2(1+2x)=10
Plis es para hoy

Answer 1

Explicación paso a paso:

se tiene q despejar x

$2 x - 1 = 5 x + 8 \\ 2x - 5x = 8 + 1 \\ - 3x = 9 \\ x = - \frac{9}{3} \\ x = - 3$

$3 + 3x - 1 = x + 2 + 2x \\ 3x - 2x - x = - 3 + 1 + 2 \\ 3x - 3x = 0 \\ 0 = 0$

$2 - x = x - 7 \\ - x - x = - 7 - 2 \\ - 2x = - 9 \\ x = \frac{ - 9}{ - 2} \\ x = \frac{9}{2}$

$5 - 2(1 - x) = 2x - 3 \\ 5 - 2 + 2x = 2x - 3 \\ 2x - 2x = - 3 - 3 \\ 0 = - 6$

$2(1 + 2x) = 10 \\ 2 + 4x = 10 \\ 4x = 10 - 2 \\ 4x = 8 \\ x = \frac{8}{4} \\ x = 2$