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  1. (–2) + (–7) = –9
  2. 5 + (–3) = 2
  3. 8 – 9 = –1
  4. 15 –(–12) = 27

Jika :

(+) + (+) = (+)

(–) + (+) = Dilihat dulu besar mana

☣Penjumlahan Adalah penggabungan antara Dua bilangan atau lebih.

♻Muhmaulana680♻

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No 1

= (-2) + (-7)

= (-2) – 7

= –9

No 2

= 5 + (-3)

= 5 – 3

= 2

No 3

= 8 – 9

= –1

No 4

= 15 – (-12)

= 15 + 12

= 27