Resposta :
7/11+2/5+3/8+x=1210
280/440+176/440+165/440+x=1210
280+176+165+440+x=1210
x=1210-280-176-165-440
x=1210-1061
x= 149 km
Resposta= 149 km percorridos a cavalo
280/440+176/440+165/440+x=1210
280+176+165+440+x=1210
x=1210-280-176-165-440
x=1210-1061
x= 149 km
Resposta= 149 km percorridos a cavalo