emilykanderson emilykanderson

02-07-2016
Mathematics

contestada

px + qy = r
2px - qy = 2r
When solving this system of equations, x =

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texaschic101 texaschic101

02-07-2016

px + qy = r
2px - qy = 2r
----------------add
3px = 3r

x = 3r/3p
x = r/p

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rudyrocks120 rudyrocks120

04-07-2016

You just add the equations:
px + qy = r
2px - qy = 2r
3px = 3r
divide by 3
px = r
divide by p
x = (r)/(p)

Answer Link

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