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b. -4x + 12x = 8x
c. -15p + 9p - 18p = -6p-18p=24p
d.9x + 6y - 10y - 8x= 9x - 8x+ 6y - 10y = x-4y
e. 6a2 - 8a + q2 - 2q= (enggak ada yang sama variabelnya jadi tetap hasilnya itu)
f. x2 + 8y2 - 16 + 10x2 - 7y2 + 11= x2 + 10x2 + 8y2 - 7y2 - 16 + 11
=11x2+y2-5
2. -4x + 12x = 8x
3. -15p + 9p - 18p = -6p - 18p
⇒ 24p
4.⇒9x + 6y - 10y - 8x = 9x - 8x+ 6y - 10y
⇒ x-4y
5. 6a² - 8a + q² - 2q
6. = + 8y² - 16 + 10 - 7y² + 11= + 10x2 + 8y² - 7y² - 16 + 11
⇒ 11x²+y2 - 5