stormybrenizer
stormybrenizer stormybrenizer
  • 23-02-2017
  • Mathematics
contestada

How to solve this using substitution. Y=3x and x+y=4

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pickemgirls pickemgirls
  • 23-02-2017
plug 3x into the second equation and solve for x. then plug x into the first equation to solve for y.
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elsamelka
elsamelka elsamelka
  • 23-02-2017
x+3x=4

4x=4

x=1

 y means 3x so 3 times1
y will be 3
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