Add: 2а - 3b +4 , 5а -6b-7 , 8a + 9b-3
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Answer:
15a - 6
Step-by-step explanation:
2а - 3b +4 + 5а -6b-7 + 8a + 9b-3 = 15a +0b -6 = 15a - 6
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