Explicație pas cu pas:
[tex]7 \times (2x + \frac{1}{2} ) = 1 \frac{3}{4} \\ 2x + \frac{1}{2} = \frac{7}{4} \div 7 = \frac{7}{4} \times \frac{1}{7} = \frac{1}{4} \\ 2x = \frac{1}{4} - \frac{1}{2} = \frac{1 - 2}{4} = - \frac{1}{4} \\ x = - \frac{1}{4} \div 2 = - \frac{1}{4} \times \frac{1}{2} = - \frac{1}{8} [/tex]
