\(31+25+46+15+14+39=\left(31+39\right)+\left(25+15\right)+\left(46+14\right)=70+40+60=110+60=170\)
( 46 +14 ) + (31+39)+(25+15)
= 60 + 70 +40
= 170
31+25+46+15+14+39
=(31+39)+(25+15)+(46+14)
= 70 + 40 + 60
= 70 + ( 40+60 )
= 70 + 100
= 170
31 + 25 + 46 + 15 + 14 + 39
= ( 31 + 39 ) + ( 25 + 15 ) + ( 46 + 14 )
= 70 + 40 + 60
= 110 + 60
= 170
31+25+46+15+14+39=(31+39)+(25+15)+(46+14)=70+40+60=70+(40+60)=70+100=170
=(31+ 39 ) + ( 25 + 15 ) + ( 46 + 14 )
= 70 + 40 + 60
= 70 + ( 40 + 60 )
= 70 + 100
= 70
\(\text{31 + 25 + 46 + 15 + 14 + 39 = 170}\)