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(9x + 6): 3 + 2 = 13
(9x + 6) : 3 + 2 = 13
(9x + 6) : 3 = 13 - 2
(9x + 6) : 3 = 11
9x + 6 = 11 × 3
9x + 6 = 33
9x = 33 - 6
9x = 27
x = 27 ÷ 9
x = 3 → Respuesta
COMPROBAMOS:
(9x + 6): 3 + 2 = 13
(9(3) + 6): 3 + 2 = 13
(27 + 6): 3 + 2 = 13
33 : 3 + 2 = 13
11 + 2 = 13
13 = 13 → Correcto
RESPUESTA:
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x = 3
Espero que te ayude.
Saludos!!