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Verified answer
Bab AljabarMatematika SMP Kelas VIII
1] (3a - b) - (2a + 12b - 9) = 3a - b + 0
2a + 12b - 9
-------------------- -
a - 13b + 9
2] 5p - 3q + 2 - 4p - 4q + 3 = 5p - 4p - 3q - 4q + 2 + 3
= p - 7q + 5