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Verified answer
( 3 / 5a² ) + ( 7 / 10a )= 3 ( 10a ) + 7 ( 5a² )
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( 5a² ) ( 10a )
= 30a + 35a²
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50a³
= 5a ( 6 + 7a )
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5a ( 10a² )
= 6 + 7a
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10a²