ethelmcdonald1 ethelmcdonald1
  • 15-01-2017
  • Mathematics
contestada

When solving proportions we set the cross products equal and then we do what

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justintmckinley
justintmckinley justintmckinley
  • 15-01-2017
multiply across  for example 3/20= x/100

3*100=300
x*20=20x

then divide by 20 on each side
300/20=15

15=x
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maddayy
maddayy maddayy
  • 15-01-2017
We cross multiply and then divide
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