Respuesta :
Y = 13
_____________________________________________________
y+45−2=5y−9
y+45−2=5y−9
y+43=5y−9
y+43−5y=5y−9−5y
−4y+43=−9
−4y+43−43=−9−43
−4y=−52
−4y−4=−52−4
__________________________________________________________
y=13
_____________________________________________________
y+45−2=5y−9
y+45−2=5y−9
y+43=5y−9
y+43−5y=5y−9−5y
−4y+43=−9
−4y+43−43=−9−43
−4y=−52
−4y−4=−52−4
__________________________________________________________
y=13
