2x +y=-2;3x-y=7
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Answer:
2x+y= -2
- 3x-y= 7
-x = -9
x=9
substitute value of x in equation 2x+y= -2
2(9)+y= -2
18+y= -2
y = -2-18
y= -18
therefore x=9 & y=-18
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