How do you solve the following system: #3x+y=8, 2x-y=7 #?
1 Answer
Apr 18, 2018
#x=3#
#y=-1#
Explanation:
Given -
#3x+y=8# ------------- (1)
#2x-y=7# ---------------(2) -----#(1) + (2)#
#5x=15#
#x=15/5=3#
#x=3#
Substitute >
#3(3)+y=8#
#9+y=8#
#y=8-9=-1#
#y=-1#
