-100-99-98-...+2-1-0+3+2...+48+49+50

-100-99-98...-50....+50
= -50+50 = 0
= -100-99....-51
= -151×50÷2
= -3775

Mapel : Matematika
Kelas : VII SMP
Materi : Teori Bilangan

Pembahasan :
-100 - 99 - 98 - ... + 50
= 151/2(-100 + 50)
= 151/2(-50)
= -3775