convert it into like fractions and then subtract it 21/7 - 3/16
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LCM of 7 and 16 = 112
= 21 x 16/112 - 3 x 7/112
= 336/112 - 21/112
= 336 -21/112
=315/112
= 79/28
=2 23/28
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Answer:
2 23/28
21 x 16/112 - 3 x 7/112
= 336/112 - 21/112
= 336 -21/112
=315/112
= 79/28 = 2 23/28
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