Please help me solve this

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

In the diagram, gef and hef are congruent. what is the value of x