해법
해법
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Four times the sum of 3 times a number and-6 is 12. What is the number?Nine subtracted from two times a number is 51. what is that number?To find a 10% increase in 300, you would find:The radius of a 원형 is 3 cm. Find its areaThere are 3 consecutive even integers with a sum of 78. What is the value of the greatest integer?