How do you solve x - y = 6 and x + y = -2?

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How do you solve x - y = 6 and x + y = -2?

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Answer 1 · 2018-05-07T19:53:13

#x=2, y=-4#

Explanation:

The question comes up with using substitution, if you rearrange the first equation #x-y=6# to #x=6+y#
Then substitute this into the second equation
#x+y=-2 =>( 6+y) +y=-2#
#6+2y=-2#
#2y=-8#
#y=-4#
Put #y=-4# into either equation
#=> x-(-4)=6 => x +4=6 =>x =2#

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How do you solve x - y = 6 and x + y = -2?

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