How do you solve by the substitution method to find the ordered pair -3y = x - 5 and x + 5y = 7?

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Answer 1 · 2017-04-18T14:54:50

You have to get # x or y # in one of your equations on the left side by itself.

#x=2 and y=1#

-3y = x - 5 and x + 5y = 7

#x=7-5y#

#-3y = (7-5y) - 5#

#-3y = 2-5y#

#-3y+5y = 2#

#2y = 2#

#y=1#

#x + 5y = 7#

#x+5=7#

#x=2#

FINAL ANSWER:
#x=2 and y=1#
or
#(2,1)#