Solve 4x+x+4=8x-3x+4. does this equation have one solution, no solution or infinitely many solutions?

What is the solution to the equation in the & show work i’m very

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?