Question 371085
First you should write an equation. Let n= the number. The equation will look like: {{{1/2*n = 12n+7}}}. You can think of the "is" in the problem as meaning "equals". Then you need to solve for n. Subtract 12n from both sides of the equation to get {{{-11 1/2* n =7}}}. This also can be written as {{{-23/2*n = 7}}}. Multiply both sides by -2/23 (the reciprocal) to get n by itself: {{{n = -14/23}}}. Our number is -14/23. =] I hope this helps! Please visit and join my website at www.myonlinetutor.webs.com for solutions.