Question

Calculați suma tuturor nr care:impartite la 5 dau catul 35?? plzz

Answer 1

D:5=35 (rest)
D=ηC+R, R<Î, Î diferit de 0
=> R€{0; 1; 2; 3; 4}

I:
D=5·35+0=175
II:
D=5·35+1=175+1=176
III:
D=5·35+2=175+2=177
IV:
D=5·35+3=175+3=178
V:
D=5·35+4=175+4=179

S=175+176+177+178+179
S=175+175+1+175+2+175+3+175+4
S=5·175+10
S=10·175:2+10
S=1750:2+10
S=875+10
S=885