Matematika

Pertanyaan

1. -8 X (-32+17) =
2. [-12-(-30)] X -21 =
3. 9 X (-4 X 5) X (10 - 14) =
4. (-15 + 7) X 50 X [5 X (-12)] =

2 Jawaban

  • 1. -8 x (-32+17)
    = -8 x - 15
    = 120.

    2. [-12-(-30)] x -21
    = 18 x (-21)
    = - 378.

    3. 9 x (-4 x 5) x (10 - 14)
    = 9 x (-20) x (-4)
    = - 180 x (-4)
    = 720.

    4. (-15 + 7) x 50 x [5 x (-12)]
    = -8 x 50 x [5 x (-12)]
    = - 8 x 50 x (-60)
    = - 400 x (-60)
    = 24.000
  • 1=(-32+17)=49×8=392
    2.(-12-(-30))×(-21)= 42×(-21)=882
    3.9×(-4×5)×(10-14)=9×20×10-14=1786
    4.(-15+7)×50×[5×(-12)]=1988

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