Final answer:
To simplify the expression -1/4(28x-12y), distribute the -1/4 to each term inside the parentheses and simplify.
Step-by-step explanation:
The expression -1/4(28x-12y) can be simplified using the distributive property. We distribute the -1/4 to each term inside the parentheses:
-1/4 * 28x = -7x
-1/4 * -12y = 3y
The simplified expression is then -7x + 3y.
Learn more about Simplifying expressions with the distributive property