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Alexa added the fractions by using the LCD (least common denominator).
Step 1 61/21 41 + 61/31 31
Step 2 61/4.31 31 + 61/31 31
Step 3 61/ 4.31 31 + 4.61/4.31 31
Step 4 5.61/4.31 31
Step 5 71/31 41 = 7.61/ 4.3 31
Step 6 5.61/4.31 31 is not equal to 7.61/4.31 31
Use the Alexa's method. Add the first two terms using the LCD (least common denominator). Write the third term as a fraction. Confirm that the relationship is true.



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