Jawaban:
14. B
15. B
Penjelasan dengan langkah-langkah:
14. 8p + 5q - (2p - 4q)
= 8p + 5q - 1(2p - 4q )
ingat a(b - c) = ab - ac
= 8p + 5q - 2p + 4q
= 8p - 2p + 5q + 4q
= 6p + 9q (B)
(4c + 8d - 3e) - (6c + 2d - 2e)
= 4c + 8d - 3e - 1(6c + 2d - 2e)
= 4c + 8d - 3e - 6c - 2d + 2e
= 4c - 6c + 8d - 2d - 3e + 2e
= -2c + 6d - e (B)
semoga membantu :)
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Jawaban:
14. B
15. B
Penjelasan dengan langkah-langkah:
14. 8p + 5q - (2p - 4q)
= 8p + 5q - 1(2p - 4q )
ingat a(b - c) = ab - ac
= 8p + 5q - 2p + 4q
= 8p - 2p + 5q + 4q
= 6p + 9q (B)
(4c + 8d - 3e) - (6c + 2d - 2e)
= 4c + 8d - 3e - 1(6c + 2d - 2e)
= 4c + 8d - 3e - 6c - 2d + 2e
= 4c - 6c + 8d - 2d - 3e + 2e
= -2c + 6d - e (B)
semoga membantu :)