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Jika a = 4x-6y, b = 8x+5y dan c = 8y-6x, tentukan a+b-c.
Jika a = 4x-6y, b = 8x+5y dan c = 8y-6x, tentukan a+b-c.
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Verified answer
= a + b - c
= (4x - 6y) + (8x + 5y) - (8y - 6x)
= 4x - 6y + 8x + 5y - 8y + 6x
= 4x + 8x + 6x - 6y + 5y - 8y
= 18x - 9y
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Penjelasan dengan langkah-langkah:
= a + b - c
= 4x - 6y + (8x + 5y) - (8y - 6x)
= 4x - 6y + 8x + 5y - 8y + 6x
= 4x + 8x + 6x - 6y + 5y - 8y
= 18x - 9y