How would i solve 7r=-7/2? i know the answer is -1/2 i just don't understand how to get -1/2 as my answer.

3. solve the given inequality and graph the solution on a number line.

Two lines parallel to the same plane are parallel to eachother

Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets,x, and the number of student tickets,y. find the solution and explain what it means. i'll you if you me