How do you solve the following linear system: # x+y=3, 3x + y = 4 #?
1 Answer
Mar 25, 2018
#x=1/2#
#y=5/2#
Explanation:
Given -
#x+y=3#
#3x+y=4#
#x+y=3# -------------(1)
#3x+y=4# -------------(2) -----(1)#-# (2)
#-2x=-1#
#x=(-1)/(-2)=1/2#
Substitute
#1/2+y=3#
#y=3-1/2=(6-1)/2=5/2#
