Question

Determina numărul x din: 3 supra 4+x=4 supra 4; x+2 supra 8; x-2 supra 5= 5 supra 5; 9 supra 10-x=1 supra 10. Va rog!! Mulțumesc!

Answer 1

$\frac{3}{4} + x = \frac{4}{4} = > x = \frac{4}{4} - \frac{3}{4} = \frac{1}{4} \\ \\ x + \frac{2}{8} = - \frac{8}{8} = > x = \frac{8}{8} - \frac{2}{8} = \frac{6}{8} \\ \\ x - \frac{2}{5} = \frac{5}{5} = > x = \frac{5}{5} + \frac{2}{5} = \frac{7}{5} \\ \\ \frac{9}{10} - x = \frac{1}{10} = > x = \frac{9}{10} - \frac{1}{10} = \frac{8}{10}$

$Succes!$