Amuffin recipe calls for 2/5 tablespoons of vanilla extract for 6 muffins. arthur is making 18 muffins. how much vanilla extract does he need?

6/5, or 1 and 1/5. Since 6 goes into 18, 3 times, you must multiply 2/5 and 3/1.

2  x  3  =  6
5  x  1  =  5

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.