tolong bantu jawab a.1+(-2)+3+(-4)+....+79+(-80) b.1+2+3+....+40 c.1+2+3+....+35
Matematika
gungratih15
Pertanyaan
tolong bantu jawab
a.1+(-2)+3+(-4)+....+79+(-80)
b.1+2+3+....+40
c.1+2+3+....+35
a.1+(-2)+3+(-4)+....+79+(-80)
b.1+2+3+....+40
c.1+2+3+....+35
1 Jawaban
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1. Jawaban KumisTebal
a. -1 × 40 = -40
b. 41 × 20 = 820
c. 36 × 14 + 18 = 522