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1. 5x + (-6x) + 2x + (-3x)
= 5x + 2x + (-6x) + (-3x)
= 7x + (-9x)
= -2x
2. -4m - (-m) + 3n -5n
= -3m + (-2n)
kurangkan
1. 3y - 2z dari 5y + 4z
5y + 4z - (3y - 2z)
=5y -3y + 4z + 2z
=2y + 6z
2. 9m - 6n - 7 dari -m + 8
-m + 8 - (9m - 6n - 7)
=-m -9m + 6n + 8 + 7
=-10m + 6n + 15
3. -11a + 3b - c dari -3a - 5b + 2c
-3a -5b + 3c - (-11a + 3b -c)
=-3a + 11a -5b -3b + 3c + c
=8a -8b + 4c