Bob finished reading his book in x days. Each day, he read 4 pages. His book has 28 pages

Bob finished reading his book in x days. Each day, he read 4 pages. His book has 28 pages

Our equation for this is found by multiplying pages per day times number of days;
4x = 28

To solve for x, we type the equation into our search engine and we get:
x = 7