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= -3 + 2b + 2a = -3 + 2(a+b) atau 2(a+b) - 3
2. (2p - 3q + 6) + (3p - 2q)
= 5p - 5q + 6 = 5(p - q) + 6
3. (-3 + 5b)-(2a-3b)
= -3 + 8b - 2a = -3 + 2(4b - a)
4. (2p-3q+6) - (3p-2q)
= -p - q + 6 = -(p + q) + 6
=> 2a + 5b - 3b - 3
=> 2a + 2b - 3
2. (2p - 3q + 6) + (3p - 2q)
=> 2p + 3p - 3q - 2q + 6
=> 5p - 5q + 6
3. (-3 + 5b) - (2a - 3b)
=> -2a + 5b + 3b - 3
=> -2a + 8b - 3
4. (2p - 3q + 6) - (3p - 2q)
=> 2p - 3p - 3q + 2q + 6
=> -p - q + 6