Package A contains 3 birthday cards and 2 thank you notes and costs $18. Package B contains 8 birthday cards and 6 thank you not
es and costs $50. If x represents the cost of a birthday card and y represents the cost of a thank you note, how much does each birthday card cost? 3x+2y=18 8x+6y=50
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a simple way to do away with denominators, is we can simply multiply both sides by the LCD, in this case the LCD is 3, so let's multiply both sides by 3.