Tolong bantu jawab kak :) asal report :(

Tolong bantu jawab kak 🙂 asal report :(

Penjelasan dengan langkah-langkah:

$6a + 7 + (2a - 4) = 8a + 3$

${a}^{2} + 8a + ( - {a}^{2} - 6a) = 2a$

$- {x}^{2} + 5xy + (4 {x}^{2} - 4xy ) \ - {x}^{2} + 4 {x}^{2} + 5xy - 4xy \ 3 {x}^{2} + xy$