Wednesday, November 20, 2013

3x-2y=8 x=2y-4 solve for x and y

3x -2y = 8    


 x = 2y - 4  


First, In the second equation subtract 2y on both sides of the equation


By subtracting, you should get


3x - 2y = 8


x    - 2y = -4 now subtract -2y with -2y ( which means subtract 3x with " x " and and 8 with -4 )


By subtracting, you should get


2x = 12 now divide both sides by 2 


By dividing,  you should get


x = 6 which is your answer for " x " 


now plug 6 into one of the equation


6 = 2y - 4 now add 4 on both sides


By adding, you should get


10 = 2y now divide both sides by 2


By dividing you should get


y = 5 which is your answer for " y "


So your answer is x = 6.    Y = 5

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