Problema Solution
If 7 is added to twice a number and this number is multiplied by 4, the result is the same as if the number is multiplied by 3 and 8 is added to the product. What is the number?
Answer provided by our tutors
let 'x' be the number
(7 + 2*x)*4 = 3*x + 8
28 + 8*x = 3*x + 8
8*x - 3*x = 8 - 28
5*x = - 20
x = - 20/5
x = -4
the number is -4.