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= p+2q+6p-3q
= 7p-q
b. B - 2C = 2p-q -(2(3p-2q)
=2p - q - (6p-4q)
= 2p-q-6p+4q
=3q-4p
c. 3a-4b+2c
3(p+2q)-4(2p-q)+2(3p-2q)
3p+6q-8p+4q+6p-4q
p+6q
smoga membantu dan srry kalo g jelas :D
= p+2q + 3(2p-q)
= p + 2q + 6p - 3q
= 7p - q
b) B - 2C
= 2p-q - 2(3p-2q)
= 2p - q - 6p + 4q
= -4p + 3q
c) 3A - 4B + 2C
= 3(p+2q) - 4(2p-q) + 2(3p-2q)
= 3p + 6q - 8p - 4q + 6p - 4q
= p - 2q