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25-11-2020
Mathematics

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Diberi x = 2 dan y = -7. Cari nilai bagi setiap ungkapan berikut.
(a) 2x - y
(b) x - 4y + 8

Respuesta :

25-11-2020

(a) 2x - y

Answer :
2(2) - (-7)
= 11

(b) x - 4y + 8

Answer :
2 - 4(-7) + 8
= 38

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