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3x + 2x = 40 - 1 - 9
5x = 30
x = 30/5
x = 6
Respuesta :
x = 6
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2 (2x - 1) - 3 (x - 2) = 64
4x - 2 - 3x + 6 = 64
4x - 3x = 64 - 6 + 2
x = 60
Respuesta :
x = 60