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= 8a --3a +b +-4
= 11a +b -4
SUERTE!!!
8a + b - (- 3a + 4) = Para quitar parentesis aplicas ley de signos
- por - = + y - por + = -
8a + b + 3a - 4 =
11a + b - 4
Respuesta.
11a + b - 4