18/21 - Equivalent fraction of 6/7, 6/7 - 4/7 + 2/7, 5/21 - 9/21 - 4/21, 3/7 - Subtract, 44/25 - Add, 4/7 - Convert 12/21 into lowest term, Proper - 7/22 is a proper or improper, Improper - 23/9 is a proper or improper, 4/8 - Solve, Like fraction - Fractions having same denominator is called,

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