How do you solve the following system: # 5x+y=-7 , 5x-9y=-23 #?

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Answer 1 · 2016-04-01T21:49:03

#x=-1,72#
#y=1,6#

#5x+y=-7" "color(red)(5x)=color(green)(-7-y)" "(1)#

#5x-9y=-23" "color(red)(5x)=color(green)(-23+9y)#

#if color(red)(5x=5x) " then "color(green)(-7-y=-23+9y)#

#-7+23=9y+y#

#16=10y#

#y=1,6#

#"use equation (1)"#

#5x=-7-1,6#

#5x=-8,6#

#x=-(8,6)/5#

#x=-1,72#