У-12/31 =5. 2z+32/17=10

[latex]y- \frac{12}{31} =5 \\ y=5+ \frac{12}{31} \\ y=5 \frac{12}{31} \\ \\ 2z+ \frac{32}{17} =10/*17 \\ \\ 34z+32=170 \\ 34z=170-32 \\ 34z=138 \\ z= \frac{138}{34} \\ \\ x=4 \frac{2}{34} \\ \\ x=4 \frac{1}{17} [/latex]

у-12/31=5 у=5+12/31 у=5 12/31 Ответ:5 12/31 2z+32/17=10 2z=10-32/17 2z=170/17-32/17 2z=138/17 z=138/17*1/2 z=69/17 z=4 1/17 Ответ:4 1/17