How do you find the solution of the system of equations #3x-y=4# and #6x+2y= -8#?

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Answer 1 · 2015-05-08T23:49:30

#"[1] "3x-y=4#
#"[2] "6x+2y= -8#

#"[3] = [1]"xx"2 "#
#6x-2y=8#

#"[4] = [2]-[3] "#
#4y=-16#

#"[5] "#
#y = -4#

#"[6] substituting [5] into [1] "#
#3x+4 = 4#

#"[7]"#
#x=8/3#

Solution:
#(x,y)=(8/3,-4)#