melodysprecherpelctt
melodysprecherpelctt melodysprecherpelctt
  • 21-08-2019
  • Mathematics
contestada

Find WX. Please help out

Find WX Please help out class=

Respuesta :

kosala1478
kosala1478 kosala1478
  • 21-08-2019

Answer:

wy = wx + xy

wx = wy - xy

wy =12y----------(1)

wx =7y+4--------(2)

xy =21------------(3)

(2) = (1) - (3)

7y + 4 = 12y - 21

12y - 7y = 4 + 21

5y = 25

y = 25/5

y = 5

so wx = 7×5+4

=35+4

=39

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