Question 676583
Let x = a number
eight times the opposite of a number is
8(-x)
36 less that the product of 4 and the number is
4x-36

set those equal to each other
8(-x)=4x-36
-8x=4x-36
subtract 4x from both sides
-12x=-36
x=3

answer:  the number is 3

plug the answer into the equation to check it