Question

alguien que me pueda ayudar a resolver esto

Answer 1

539+201= (539+1)+(201-1) = 540 + 200 = 740
128+12=(128+2)+(12-2) = 130+10 = 140
21+99 = (21-1)+(99+1) = 20 + 100 = 120
72+88 = (72-2)+(88+2) = 70 + 90 = 160
67+93 =(67+3)+(93-3)= 70+90 = 160
107+58 =( 107-2)+(58+2)=105+60=165
261+779= (261-1)+(779+1) = 260+780 =1040
154+381= (154+1)+(381-1) =155 +380 = 535
678+297=(678+2)+(297-2)=680+295=975
156+1024=(156-1)+(1024+1)=155+1025=1180
466+759=(466-1)+(759+1)=465+760=1225
509+816=(509+1)+(816-1)=510+815=1325