0
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12(8a + 28) + 2a + 5
84a + 336 + 2a + 5
86a + 341
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-2a + 5 = 1 -2a = -5 + 1 -2a = -4 a = -4/-2 a = 2
3b -1
7
2a-5
3a + 4b - 5 - 1a + 7b + 3 - 1b 2a + 10b - 5 + 3 2a + 10b - 2