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3(3.7) -8 = 3.1
Respuesta: X = 3.1
15x-35 = 20
15x = 20+35
15x = 55
x = 55/15
x = 3.6667
Ahora:
3x-8
=(3*3.6667)-8
= 11 -8
=3
Respuesta:
3
Saludos....