Three silver coins and two gold coins together weigh 23 ounces.

Three times the sum of a number and seven is negative thirty-six. what is the number?

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9