Matematika

Pertanyaan

1. 8+4+(-16)-8-4+7-4 =
2. 10x(-2)x4+6-7-9 =
3. 16:(-4)x6x(-2)+10-7 =
4. 21+7-8-9+(-14)-(-6)+6 =
tolong dijawab ya kak ..
aku minta kasih tau caranya donk kak
..terima kasih yaa ^^

1 Jawaban

  • Jawaban:
    1.8 + 4 + (-16) - 8 - 4 + 7 - 4=(8 + 4 - 16) - 8 - 4 + 7 - 4
    =(-4 - 8 - 4) + 7 - 4
    =-(4 + 8 + 4) + 7 - 4
    =-16 + 7 - 4
    =-(16 - 7) - 4
    =-9 - 4
    =-(9 + 4)
    =-13.
    2.10 × (-2) × 4 + 6 - 7 - 9=(10 × (-2) × 4) + 6 - 7 - 9
    =-80 + 6 - 7 - 9
    =-(80 - 6 + 7 + 9)
    =-90.
    3.16 : (-4) × 6 × (-2) + 10 - 7=(16 : (-4) × 6 × (-2)) + 10 - 7
    =(48 + 10) - 7
    =58 - 7
    =51.
    4.21 + 7 - 8 - 9 + (-14) - (-6) + 6=(21 + 7 - 8 - 9) - 14 + 6 + 6
    =(11 - 14) + 6 + 6
    =(-(14 - 11) + 6 + 6
    =(-3 + 6) + 6
    =(6 - 3) + 6
    =3 + 6
    =9.
    Semoga membantu.


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