How do you complete each ordered pair (_, 11) so that it is a solution to 6x - y = 7?

1 Answer
Alan P.
Feb 16, 2017

#(underlinecolor(red)3,11)# is a solution to #6x-y=7#

Explanation:

Note I have used the letter #a# in place of the underscore from the original version of the question.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If #(color(red)x,color(blue)(y))=(color(red)a,color(blue)(11))#
is a solution to #6color(red)x-color(blue)y = 7#
then
#color(white)("XXX")6color(red)a-color(blue)(11)=7#
#rarr#
#color(white)("XXX")6color(red)a=18#
#rarr#
#color(white)("XXX")color(red)a=3#

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