美国高考sat数学题!each of the integers a and b has a remainder of 2

美国高考sat数学题!each of the integers a and b has a remainder of 2 when it is divided by 12.what is the remainder when the sum a+2b is divided by
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设a÷12=x余2.b÷12=y余2.则(a+2b)÷6=（12x+2+24y+4)/6=2x+4y+1整除,答案为0

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