[tex] \frac{7}{4} \times x - \frac{1}{2} = 3 \\ \frac{7x}{4} = {}^{2)} 3 + \frac{1}{2} \\ \frac{7x}{4} = \frac{7}{2} \\ 7x = \frac{7}{2} \times 4 \\ 7x = \frac{7 \times 4}{2} {}^{(2} \\ 7x = 7 \times 2 \\ 7x = 14 \\ x = 14 \div 7 \\ \boxed{ x = 2}[/tex]
S = {2}
[tex] |2x + 5| = 3 \\ \\ 2x + 5 = 3 \\ 2x = 3 - 5 \\ 2x = - 2 \\ x = - 2 \div 2 \\ \boxed{ x = - 1} \\ \\ 2x + 5 = - 3 \\ 2x = - 3 - 5 \\ 2x = - 8 \\ x = - 8 \div 2 \\ \boxed{x = - 4}[/tex]
S = {-1;-4}
