posted by betty on .
still can't solve .32x + .20y = 3.92
it's my last math question for the day!!!!
What do you mean solve it?
suppose you bought some 32 cents stamps and some 20 cents stamps. you spent $3.92 for 16 stamps. how many of each stamp did you buy?
i got the equation--.32x + .20y = $3.92 but don't know how to solve for x and y