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2014-10-09T16:11:29+03:00
a. x+y+5=1250+5=1255
b.x+5+y=1250+5=1255
c.3+x+y=3+1250=1253
d. x-3+y=1250-3=1247
e.x+(y+10)=1250+10=1260
f.x+x+y+y= 2(X+Y)=2*1250=2500

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