Explicație pas cu pas:
[tex]$\mathbf{b) \: 0.5(x - 2) + 2.3x = 5x - 4}$[/tex]
[tex]$\mathbf{0.5x - 1 + 2.3x = 5x - 4}$[/tex]
[tex]$\mathbf{2.8x - 1 = 5x - 4}$[/tex]
[tex]$\mathbf{2.8x - 5x = - 4 + 1}$[/tex]
[tex]$\mathbf{ - 2.2x = - 3}$[/tex]
[tex]$\mathbf{x = 3 \div \frac{11}{5} = 3 \times \frac{5}{11} }$[/tex]
[tex]$\mathbf{x = \frac{15}{11} }$[/tex]
Bafta!
