y-x=17, 2y+3x=-11

solve each system by elimination.
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1 Answer

line 1:  y -x =17  or 3y-3x=51

line 2: 2y +3x=-11

add line 1 & line 2...(3y +2y) + (-3x +3x)=51-11

5y=40

y=40/5=8

from line 1, x=y-17=8-17

x=-9
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