Simplify the following 21/3
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a) 2 1/3 + 3 1/2 - 5 6/7 + 2 7/15
= 7/3 + 7/2 - 41/7 + 37/15
= (490 + 735 - 1230 + 518)/210
= 513/210
= 171/70
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b) 21/3 = 7
( As, 3×7 = 21)
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= 7/3 + 7/2 - 41/7 + 37/15
= (490 + 735 - 1230 + 518)/210
= 513/210
= 171/70
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b) 21/3 = 7
( As, 3×7 = 21)
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