答案:D
解析:
The cost of a gallon of milk (y cents) is equal to z cents less than the cost of 2 half-gallons ((2x) cents). This can be written algebraically as y = (2x)-z. Subtracting y from both sides of the equation yields (2x)-y-z = 0.
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答案:D
解析:
The cost of a gallon of milk (y cents) is equal to z cents less than the cost of 2 half-gallons ((2x) cents). This can be written algebraically as y = (2x)-z. Subtracting y from both sides of the equation yields (2x)-y-z = 0.