Find the sum. Long gone out of my mind

Whatswrong asked Feb 14, 2023

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15 votes

Whatswrong asked Feb 14, 2023

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6 votes

$4r {}^(3) s - rs + 7r {}^(3) s + 8rs - 3 + 8rs + 6 \\ add \: \: terms \: \: of \: \: same \: \: variables \\ 11r {}^(3) s + 15rs + 3$

Hivaga answered Feb 18, 2023

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