Explicación paso a paso:
a) x - 3 + x - 2 = 2
2 3
3x - 9 + 2x - 4 = 2
6
= 5x - 9 - 4 = 2
5x = 12 + 13
= x = 5 respuesta
b) x +x = 2 (x - 4)
5
= x + x = 2x + 2 ( - 4)
5 x + x = 2x + 2 . ( 4)
6x = 2x - 8
6x = 10x - 40
- 4x = - 40
=
x = 10 respuesta
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Explicación paso a paso:
a) x - 3 + x - 2 = 2
2 3
3x - 9 + 2x - 4 = 2
6
= 5x - 9 - 4 = 2
6
5x = 12 + 13
= x = 5 respuesta
b) x +x = 2 (x - 4)
5
= x + x = 2x + 2 ( - 4)
5
5 x + x = 2x + 2 . ( 4)
5
6x = 2x - 8
5
6x = 10x - 40
- 4x = - 40
=
x = 10 respuesta