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OpenStudy (anonymous):
2/9+-43/72=
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jhonyy9 (jhonyy9):
so do you know how add two fractions ?
OpenStudy (anonymous):
a lil
OpenStudy (anonymous):
45/81
jhonyy9 (jhonyy9):
why 81 ?
jhonyy9 (jhonyy9):
for 9 and 72 what is the common denominator ?
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