When solving an equation, does the variable have to be on a specific side? why or why not

Which statement best explains why ben uses the width hi to create the arc at j from point k

One file clerk can file 10 folders per minute. a second file clerk can file 11 folders per minute. how many minutes would the two clerks together take to file 672 folders?

Write an expression that is equivalent to ( 3+14)+27.