Question

4 supra 5+2x=1 întreg 1 supra 2
Vă rog ajutați-mă

Answer 1

x = 7/20

Răspuns:

$\frac{4}{5} + 2x = 1 \frac{1}{2} \\ \\ \frac{4}{5} + 2x = \frac{3}{2} \\ \\ 2x = \frac{ {}^{5)} 3}{2} - \frac{ {}^{2)} 4}{5} \\ \\ 2x = \frac{15}{10} - \frac{8}{10} \\ \\ 2x = \frac{15 - 8}{10} \\ \\ 2x = \frac{7}{10} \\ \\ x = \frac{7}{10} \div 2 \\ \\ x = \frac{7}{10} \times \frac{1}{2} \\ \\ x = \frac{7}{20}$