How do you solve the system of equations #2x - 10y = 8# and #3x - 10y = 17#?

1 Answer
David G.
Jun 25, 2017

This is a relatively easy one: subtract the expression starting with #2x# from the one starting with #3x#, and you get #x=9#. Substitute that back into either expression to determine that #y=1#.

Explanation:

#(3x-10y=17)-#
#(2x-10y=8) =#
#x=9#

#3(9)-10y=17#
#27-10y=17#
#-10y=-10#
#y=1#

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