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Add & subtract rational expressions: like denominators

Daniel and Dingane were each asked to perform the following operation:
18y2+2216y39+y1416y39\dfrac{18y^2+22}{16y-39}+\dfrac{y-14}{16y-39}
Their answers are shown below:
DanielDingane
18y2+y+832y78\dfrac{18y^2+y+8}{32y-78}18y2+y+816y39\dfrac{18y^2+y+8}{16y-39}
Which student is correct?
Choose 1 answer:
Choose 1 answer: