5^28+5^27+5^26÷5^29+5^28-5^27=31÷145
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Step-by-step explanation:
5^28+5^27+5^26÷5^29+5^28-5^27
=5^26(5^2+5+1)/5^26(5^3+5^2-5)
=(25+6)/(125+25-5)
=31/145
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