if 3x+ 2 y=8;2 x+3y= 7
then find x+y & x-y
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Step-by-step explanation:
3x+2y=8-----------(1)
2x+3y=7-----------(2)
add (1) and (2)
3x+2y=8
+2x+3y=7
5x+5y=15
x+y=15/2
x+y=7.5
sub(1) and (2)
3x+2y=8
-2x+3y=7
x-y=1
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