[latex](X- frac{29}{31} )+ frac{18}{31}=1 frac{17}{31} [/latex]

х - [latex] frac{29}{31} [/latex] = [latex] frac{48-18}{31} [/latex]х - [latex] frac{29}{31} [/latex] = [latex] frac{30}{31} [/latex]х = [latex] frac{30+29}{31} [/latex]х = [latex] frac{59}{31} [/latex]х = [latex]1 frac{28}{31} [/latex]