How can i solve a multi step equation ex. 4x-9=7x+12

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.