Neeedddddd helpppppppp urgent

Doing the problem CORRECTLY. Just compare both the explanation and find the mistakes.
Also you can write above explanation in third box as it is!
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[tex]{\bold{\red{HOPE\:IT\:HELPS!}}}[/tex]
[tex]\color{yellow}\boxed{\colorbox{black}{MARK\: BRAINLIEST!❤}}[/tex]