How do you solve the following system?: #-7x -2y =1, -8x +2y = -3#

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Answer 1 · 2018-05-29T09:56:38

#x=2/15, y=-29/30#

If you add the two equations together this will remove the #y# variable.

#-7x-2y=1#
#-8x+2y=-3#

After adding them

#-15x=-2#

#x=2/15#

Substitute this value for x into equation one

#-7xx2/15-2y=1#

#(-14)/15-2y=1#

Add #2/15# to both sides

#-2y=1 14/15#

#y=-29/30#