Respuesta :
First isolate yz from wx, by subtracting it from both sides.
wx+yz=bc
wx+yz-yz=bc-yz
Now you should have: wx=bc-yz
From here, you isolate the w from wx in order for x to stand by itself:
wx/w=(bc-yz)/w
wx+yz=bc
wx+yz-yz=bc-yz
Now you should have: wx=bc-yz
From here, you isolate the w from wx in order for x to stand by itself:
wx/w=(bc-yz)/w
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