Question #22da8

1 Answer
Jam
Oct 28, 2017

#x = 2#
#y = 1#

Explanation:

1) #2x + y = 5#
2) #3x + y = 7#

Subtract equation 1 from equation 2:
#3x - 2x = x#
#y - y = 0#
#7 - 5 = 2#

Therefore, #x = 2#.

Substitute #x = 2# into either equation:
#2x + y = 5#
#(2 * 2) + y = 5#
#4 + y = 5#
#y = 1#

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