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OpenStudy (anonymous):
Add. Simplify, if possible. 5/(9z^3) + 1/(15z^2)
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jhonyy9 (jhonyy9):
the common denominator is 45z3 so than multiply first term by 5 and second by 3z and will get (25+3z)/45z3
jhonyy9 (jhonyy9):
ok ?
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