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dikoreksi kembali ya.
= 1
2. * 4 x -2 = -8
* 10 : 5 = 2
* -8 + 2 = -6
3. 13 x (-4) = -52 + 5 = -47+7 = -40
4. * 8 : (-4) = -2
* 16 - (-2) = 18
* 18 + 15 = 33
5. *(-2) x 3 = -6
* 18 - (-6) = 24
* 24 + 21 = 45
6. * (-10) x 7 = -70
* -7 - (-70) = 63
8. (-10) x 3 = -30 + (-11) = -41
9. * 3 x 5 = 15 + (-20) = -5
no 7 dan 10 kurang jelas maaf...
kalo kamu ga ngerti, di dalam matematika selalu perkalian atau pembagian yang didahulukan daripada penjumlahan atau pengurangan