HALLE X: 3X+4X+5X-60=200-X *
A 26
B 40
C 30
D 20
E 10
F 13
A 26
B 40
C 30
D 20
E 10
F 13
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Respuesta:
D
Explicación paso a paso:
3x+4x+5x-60=200-x
Acomodamos los factores
3x+4x+5x+x=200+60
Sumamos términos semejantes
13x=260
x=260/13
x=20