How do you solve by substitution # x + y = 10# and #y = x + 8#?

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Answer 1 · 2018-03-08T14:01:55

#color(magenta)(therefore x=1 and y=9#

#y=x+8#

Given that,

#x+y=10#

#x+x+8=10#

#2x+10=8#

#2x=10-8#

#2x=2#

#x=2/2#

#color(red)(x=1#

#y=x+8#

#y=1+8#

#color(red)(y=9#

#color(magenta)(therefore x=1 and y=9#

~Hope this helps! :)