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2x -x - 3x = - 36 + 6
2x - 4x = - 36 + 6
- 2x = - 30
x = - 30/-2
x = 15
Solución :
x = 15
VERIFICAMOS :
2x - 6 = 3x - 36 + x
2 (15) - 6 = 3 (15) - 36 + 15
30 - 6 = 45 - 36 + 15
24 = 60 - 36
24 = 24
La solución es correcta.