SOLUTION: the sum of four times a number and seven is equal to the difference of the number and eight. find the number

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Question 1093634: the sum of four times a number and seven is equal to the difference of the number and eight. find the number
Answer by greenestamps(13203) About Me  (Show Source):
You can put this solution on YOUR website!

The sum of four times a number and seven.... Call the number x; then this expression is
4x%2B7

The difference of the number and 8... this expression, using the same x for the number, is
x-8

The problem says those two expressions are equal:
4x%2B7+=+x-8

Basic algebra from there....