Friday, January 25, 2013

Solve the system of equations:3x-y= 5 5x-2y = 3

3x - y   = 5
5x - 2y =
3


First, multiply everything in the first equation by
2


By multiplying, your equation should look
like


6x - 2y =
10


5x - 2y =
3   
subtract the -2y with -2y ( which means subtract 6x with 5x and 10
with 3)


By subtracting, your equation should look
like


x = 7 which is your
answer for " x "


Now, plug 7 into one of the
equation


3 ( 7 ) - y = 5 now
multiply 7 with 3


By multiplying, your equation should look
like


21 - y = 5 now subtract
both sides by 21


By subtracting your equation should look
like


-y  = -16 now divide both
sides by -1


By dividing, your equation should look
like


y =
16


So your answer is x = 7  
;    y = 16

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