#2x-y=3# #x+y=3#
cancel #+y# and #-y# then add #2x +x# and put it equal to #3+3#
then solve it and #x=2# after that put in equation 1 which is #2x -y=3# now place the value of x in this equation # 2(2) -y=3# now solve the equation #4-y=3# #-y=-1# cancel the minus sign and the ans will be #y=1#