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OpenStudy (anonymous):
Add. Simplify, if possible. 3/(49z^3) + 1/(21z^2)
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OpenStudy (anonymous):
ok - the LCM of 49z^3 and 21z^2 is 147 z^3 so the addition becomes 3*3 + 1 * 7z --- ----- 147z^3 147z^3 = 9 + 7z ------ 147z^3
OpenStudy (anonymous):
THX
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