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Let R be a ring, let S be a subring of R and let be an ideal of R. Note that I have proved that (5+1)/1 = {5 +1 | 5 € S) and
Let R be a ring, let S be a subring of R. and let / be an ideal of R. Note that I have proved that (5 + 1)/1 = {5 +1 | SES) a
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Let us s/sni TO show Take, tSt I Then Let & be aring, s be a subring and I be an ideal of R. de fine 02 (SI) - by $(8+ I)- 5+-لها Toska, (s, + I) = (S, + I) mo there si, S₂ES. (su+1) = *(5,+5) (for well de fried mers) To Show Then Sit I - S, & I (siI hope you know that Φ is well defined.In case you don't know I have shown the well definedness of Φ. So if wish to write it freshly you first show the well defined ness then show that it is a ring homomorphism

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