paulaamoran
paulaamoran
05-11-2017
Mathematics
contestada
if x+y-z=37 and x+z-y =29, what is x?
Respuesta :
dannielle
dannielle
05-11-2017
x+y-z=37
x-y+z=29
⇒ we sum up these relations
x+x+y-y-z+z=37+29
2x=66
x=66:2
x=33
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