[tex]ab + b = b(a + 1)[/tex]
Ответ: b
[tex] {a}^{2} + 2abc = a(a + 2bc)[/tex]
Ответ: a
[tex]3a + 15 = 3(a + 5)[/tex]
Ответ: 3
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Answers & Comments
[tex]ab + b = b(a + 1)[/tex]
Ответ: b
[tex] {a}^{2} + 2abc = a(a + 2bc)[/tex]
Ответ: a
[tex]3a + 15 = 3(a + 5)[/tex]
Ответ: 3