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You can solve the following proportion by cross multiplying. What will the equation be after you cross multiply? 3/9 = x/15
a.3x = 9 · 15
b.15 = 9x
c.3x = 15
d.3 · 15 = 9x

Respuesta :

altavistard
 3         x
---- = -----
  9       15

so 9x = 45 (and x =5).
Its D 

3 * 15 = 9x  Answer

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