Question

What number, when doubled, is 51 greater than half of itself?

Answer 1

hey the eq says 2x> x/2 + 45. so get x/2+45's lcd. so that's 2. x+90/2. so 2x>x+90 all over 2. then cross multiply 2. so it 'll become 4x> x + 90. transpose x. then 3x>90 didvide both sides by 3 so. x> 30 that is the answer

Answer 2

102. . Steps:. 1/2x + 51 = x. . 51 = 1/2x. . 102 = x

Answer 3

the answer is 34.. 34 times 2 is 68.. 34/2 is 17.. 64-17=51

Answer 4

Using your correction:. . a) a number's double -> 2x. b) greater than it's half by 45 -> x/2 + 45. c) the two are equal (2x = x/2 + 45). . Multiply both sides of the equation by 2 to simplify:. 4x = x + 90. . Now collect like terms. 3x = 90. . Now solve for 'x'. . x = 90 / 3 = 30. . Now to prove:. . a) number's double -> 2x = 2 * 30 = 60. b) number's half plus 45 -> x/2 + 45 = 15 + 45 = 60. . Both statements hold true, so the number is '30'

Answer 5

102 because 51x2 eguals102