Ответ:

x=271

Пошаговое объяснение:

x/24-7=1 29/40+2 17/30=

x/24-7=(1+2)+(29/40+17/30)=

x/24-7=3+(29/40+17/30)=x/24-7=3+31/24=

x/24-7=3+1 7/24=

x/24-7=3+1+7/24=

x/24-7=4+7/24=

x/24-7=4 7/24=x/24-7=4×24+7/24=x/24-7=96+7/24=x/24-7=103/24=

24(x/24-7)=24×103/24=

24×x/24-24×7=24×103/24=24×x/24-24×7=103=

x-24×7=103=x-168=103=

x-168=103=x-168+168=103+168=x=103+168=x=271