SOLUTION: 6x - y = 39 6x + 7y=33

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Question 444146: 6x - y = 39
6x + 7y=33
Answer by mananth(16946) About Me  (Show Source):
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6x-y=39 .............1
6x+7y=33 .............2
Eliminate y
multiply (1)by 7
Multiply (2) by 1
42x-7y=273
6x+7y=33
Add the two equations
48x=306
/48
x=6.38
plug value of x in (1)
6x-1y=39
38.25- y=39
-y=39-38.25
-y=0.75
y=-0.75