a+5 + a-2 = 4(a+5) + 3(a-2) = 4a+20+3a-6 = 7a+14
3a 4a 12a 12a 12a
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a+5 + a-2 = 4(a+5) + 3(a-2) = 4a+20+3a-6 = 7a+14
3a 4a 12a 12a 12a
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