1) 2(x–7) a) 2x+7 b) 2x–14 c) –5x 2) 3(5x–2) a) 5x–6 b) 15x+3 c) 15x–6 3) 2(–5x+2) a) 10x+4 b) –10x+4 c) –10x–4 4) –2(x+7) a) –2x+14 b) –2x–14 c) 2x–14 5) –3(2x+5) a) 6x–15 b) –6x+15 c) –6x–15 6) 2(–5x+2) a) –10x–4 b) 10x+4 c) –10x+4

化簡一元一次式(分配律)

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