Evaluate the expression when x = -3/8 and y = 5/16. Write your answer in simplest form. x-3y

Sure, let's evaluate the expression step by step.

Given: x = -3/8 y = 5/16

Expression: x - 3y

Step 1: Substitute the values of x and y into the expression.

= (-3/8) - 3*(5/16)

Step 2: Multiply 3 with 5/16.

= (-3/8) - (15/16)

Step 3: Subtract the fractions. To do this, they must have the same denominator. In this case, they do (8 and 16). We can convert -3/8 to -6/16 to have the same denominator.

= -6/16 - 15/16

Step 4: Subtract the numerators.

= -21/16

So, the expression x - 3y evaluates to -21/16 when x = -3/8 and y = 5/16.