Use your classmates to write 5 or more ratios. for example, you could compare boys to girls or people with glasses to people without glasses.

No because if you do the higher number minus the lower number you will get a positive. if you do it the other way around you will get a negative number

It's like discovering the answer to a puzzle. the purpose in solving an equation is to find the value or values of the variable that makes it a true statement. any value of the variable that makes the equation true is called a solution to the equation.