How do you solve the following linear system: # x - 3y = -3, x + 3y = 9, #?

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Answer 1 · 2016-04-01T14:58:42

#x=3#
#y=2#

The given equations are
#x-3y=-3" "#first equation
#underline(x+3y=9" ")#second equation
#2x+0=6##larr#the result after adding the terms

and #2x=6#

#x=3#

We can now solve for #y# using #x=3# and second equation

#x+3y=9" "#second equation
#3+3y=9" "#second equation
#3y=9-3#
#3y=6#

#y=2#

God bless....I hope the explanation is useful.