The sum of two numbers is 37. Their difference is 7. What are the numbers?

Answers:

17 and 24

16 and 21

15 and 22

18 and 25

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Let xy = z, where x, y, z and nonzero numbers. If x is multiplied by 3 and z is divided by 3, this is equivalent to multiplying y by A. 1/9 B. 1/3 C. 1 D. 3 E. 9

The expression x3 - 64 can be written as (x) 3 - (4) 3. What is the factorization of x3 - 64? a3 - b3 = (a - b) (a2 + ab + b2) (x - 4) (x2 + 4x + 8) (x - 4) (x2 + 4x + 16) (x - 64) (x2 + 64x + 16) (x - 64) (x2 + 64x + 4,096)

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Three times the difference of a number x and seven is twenty-three minus the sum of three times a number x and two. what is the value of x?