Problema Solution
Find three consecutive odd integers such that 7 times the sum of the first and the third is 120 less than 10 times the opposite of the second.
Answer provided by our tutors
Find three consecutive odd integers such that 7 times the sum of the first and the third is 120 less than 10 times the opposite of the second.
x - 1st
x +2- 2nd
x +4- 3rd
7(x + x + 4 ) = 10(-x -2) -120
14x + 28 = -10x -20 -120
14x + 10x = -140 - 28
24x = 168
x = 168/24
x = 7
answers: 7, 9, 11