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  3. The larger of two numbers exceeds three times the smaller number by The sum of twice the larger and 4 times the smaller is 7If a

The larger of two numbers exceeds three times the smaller number by The sum of twice the larger and 4 times the smaller is 7If a

admin2013-05-19  31
问题 The larger of two numbers exceeds three times the smaller number by The sum of twice the larger and 4 times the smaller is 7If a is the smaller number, which equation below determines the correct value of x?
选项 A、4(3a + 2)+ 2a=73
B、4(3a+2)+ 2a=73
C、(6a+2)+4a=73
D、2(3a+2)+4a=73
E、2(3a-2)+4a = 73
答案D
解析 The correct answer is D. To answer this question, carefully convert the given information into its mathematical equivalent. The larger number is 3a+2; you are given that the smaller number is a. Therefore, the equation is 2(3a+2)+4a=73.
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