31/7 +21/9 add the fraction
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31/7 +21/9= 31/7+7/3
93+49/21
142/21
Answered by
0
31/7 + 21/9
31/7 + 7/3
93/21 + 49/21
142/21
31/7 + 7/3
93/21 + 49/21
142/21
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