Question

Resolver y comprobar las ecuaciones
-2(1-2)-(1-2x)=-x-2
2x+4=3x+3(x-2)-4
5(2x-2)-x=-3(2-x)
Necesito ayuda

Answer 1

-2(1-2)-(1-2x)=-x-2
- 2 (- 1) - 1 + 2x = - x - 2
2 - 1 + 2x = - x - 2
1 + 2x = - x - 2
2x + x = - 2 - 1
3x = - 3
x = - 3/3
x = - 1

RESPUESTA: El valor de x es - 1

COMPROBAMOS 
-2(1-2)-(1-2x)=-x-2
- 2 (- 1) - (1 - 2 * - 1) = - (- 1) - 2
2 - (1 + 2) = 1 - 2
2 - (3) = - 1
2 - 3 = - 1
- 1 = - 1
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2x+4=3x+3(x-2)-4
2x + 4 = 3x + 3x - 6 - 4
2x + 4 = 6x - 10
2x - 6x = - 10 - 4
- 4x = - 14
x = - 14/-4
x = 7/2

RESPUESTA;: El valor de x es 7/2


COMPROBAMOS 
2x+4=3x+3(x-2)-4
2 (7/2) + 4 = 3 (7/2) + 3 (7/2 - 2) - 4
1 (7) + 4 = 21/2 + 3 (3/2) - 4
7 + 4 = 21/2 + 9/2 - 4
11 = (21 + 9)/2 - 4
11 = 30/2 - 4
11 = 15 - 4
11 = 11
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5(2x-2)-x=-3(2-x)
10x - 10 - x = - 6 + 3x
9x - 10 = - 6 + 3x
9x - 3x = - 6 + 10
6x = 4
x = 4/6
x = 2/3

RESPUESTA: El valor de x es 2/3

COMPROBAMOS
5(2x-2)-x=-3(2-x)
5 (2 * 2/3 - 2) - 2/3 = - 3 (2 - 2/3)
5 (4/3 - 2) - 2/3 = - 3 (4/3)
5 (- 2/3) - 2/3 = - 12/3
- 10/3 - 2/3 = - 4
(- 10 - 2)/3 = - 4
- 12/3 = - 4
- 4 = - 4