Assume sarah's weight is m. first, she lost 12 pounds, this means that her weight became: m - 12 pounds then, she gained 4 3/8 pounds, therefore, her current weight is: m-12+4 3/8 pounds the total change in her weight is: -12+4 3/8 = -7.625 pounds the negative sign refers to the loss. this means that the overall change is losing 7.625 pounds
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