If #x + 2y = 8# and #-2x + 3y = 5#, then #x =# ?

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Answer 1 · 2018-03-19T06:59:10

Follow explanation and #x=2# and #y=3#

expand the 1st equation (by 2)

#2x + 4y = 16#
#-2x + 3y = 5# (The 2nd equation)

Add these:

#7y = 21#

#y= 3#

Now find x:

#x + (2times3) = 8#

#x = 8-6#

#x=2#