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2w = - 39 - 35
2w = - 74
w = -74/2
w = - 37
Solución :
w = - 37
COMPROBAMOS :
2w + 35 = - 39
2 (- 37) + 35 = - 39
- 74 + 35 = - 39
- 39 = - 39
La solución es correcta.