A box of pencils costs 7 dollars and a box of pens costs RM12. Ali paid 1 1 1 dollars to buy 3x boxes of pencils and y boxes of pens while Haris paid 11 dollars to buy x boxes of pencils and 2y boxes of pens. Find the values of x and y.
If answer right and explanation can let me understand I will give you brainliest and thanks
