Question

suma a 5 nr pare consecutive este 80 aflati nr

Answer 1

a+a+2+a+4+a+6+a+8=80
5a+20=80
5a=80-20
5a=60
a=60:5
a=12
nr sunt 12,14,16,18,20

Answer 2

a+b+c+d+e=80 1 nr ---- 2 nr----2 3 nr----4 total 80 4 nr ----6 5 nr ----8 80-20=60(5 parti egale) 60:5=12(1 nr) 12+2=14 (2 nr) 14+2=16 (3 nr) 16+2=18(4 nr ) 18+2=20 (5 nr) Sper ca te-am ajutat!