23 Determina due numeri naturali, sapendo che la loro somma divisa per la loro differenza dà per quoziente 3 e resto 4 e che la somma di \( \frac{1}{6} \) del maggiore e di \( \frac{2}{5} \) del minore vale 7 .

1. If \( \mathbf{A}=[1,2,3] \) and \( \mathbf{B}=[4,5,6] \), what is \( \mathbf{A}+\mathbf{B} \) ?

б. \( \frac{12 p^{5}}{12 p^{4}}= \)

Express in the modulus form the following incqualites \( (x+1)^{2}>9 \)

e. \( \frac{14 x^{4} y^{7}}{16 x y^{7}}=7 x \)

5. If the area of a rectangle is \( x^{2}-x-6 \) sq. units and its length is \( (x-3) \) units, then its breadth is \( \begin{array}{llll}\text { a. }(x-2) \text { units } & \text { b. }(x+3) \text { units } & \text { c. }(x+2) \text { units } & \text { d. }(x-3) \text { units }\end{array} \)