heneywhitenton heneywhitenton
  • 02-10-2018
  • Mathematics
contestada

Find the value of x and y

Find the value of x and y class=

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gmany
gmany gmany
  • 04-10-2018

We have the equations:

x + 3 = 15 and 3y - 1 = 2x - 4

x + 3 = 15    |-3

x = 12

Put the value of x to the second equation:

3y - 1 = 2(12) - 4

3y - 1 = 24 - 4

3y - 1 = 20     |+1

3y = 21    |:3

y = 7


Answer: x = 12 and y = 7.

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