Respuestas
Respuesta dada por:
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a) x - 3 = 25 b) x + 9 = - 234
x = 25 + 3 x = - 234 - 9
x = 28 x = - 243
c) - 9 = - x + 12 d) - 15 = x - 8
. - 9 - 12 = - x - 15 + 8 = x
- 21 = - x - 7 = x
21 = x
e) x - 23 = - 78 f) x + 6 = - 22
x = - 78 + 23 x = - 22 - 6
x = - 55 x = - 28
g) 19 = x - 6 h) - 14 - x = 20
19 + 6 = x - x = 20 + 14
25 = x - x = 34
x = - 34
i) x - 5 = - 9 j) 1 - 8 = 623 + x
x = - 9 + 5 1 - 8 - 623 = x
x = - 4 1 - 631 = x
- 630 = x
k) - 2 = x - 723 l) - 9 = x - 25
- 2 + 723 = x - 9 + 25 = x
721 = x 16 = x
x = 25 + 3 x = - 234 - 9
x = 28 x = - 243
c) - 9 = - x + 12 d) - 15 = x - 8
. - 9 - 12 = - x - 15 + 8 = x
- 21 = - x - 7 = x
21 = x
e) x - 23 = - 78 f) x + 6 = - 22
x = - 78 + 23 x = - 22 - 6
x = - 55 x = - 28
g) 19 = x - 6 h) - 14 - x = 20
19 + 6 = x - x = 20 + 14
25 = x - x = 34
x = - 34
i) x - 5 = - 9 j) 1 - 8 = 623 + x
x = - 9 + 5 1 - 8 - 623 = x
x = - 4 1 - 631 = x
- 630 = x
k) - 2 = x - 723 l) - 9 = x - 25
- 2 + 723 = x - 9 + 25 = x
721 = x 16 = x
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