Question

- Allo el valor del "×" en cada caso​

Answer 1

Respuesta:

............................

Answer 2

a) 5x + 15 = 4x -8
5x - 4x = -8 -15
x = -23

b) 3x - 3 + 1 = 5x - 10
3x - 2 = 5x - 10
3x - 5x = -10 + 2
-2x = -8
x = 4

c) 2 - 6x = x - 5
-6x - x = -5 - 2
-7x = -7
x = 1

d) -x + 1 = 4x + 4 - 8
-x + 1 = 4x - 4
-x - 4x = -4 - 1
-5x = -5
x = 1

e) 2x + 2 + x + 3 = 5x + 5
3x + 5 = 5x + 5
3x = 5x
x = 0

f) x - 2 - 2x = 14x - 2x - 15x
x - 2 = 14x - 15
x - 14x = -15 + 2
-13x = -13
x = 1