8) −2m + 15c − 9 − 3t + 14h + r − 2m − 8r + 4m − 19h + 1 − 11c + 3d =

\(-2m-2m+4m=0\), \(15c-11c=4c\), \(14h-19h=-5h\), \(r-8r=-7r\), \(-9+1=-8\).

Ответ: \(4c-3t-5h-7r+3d-8\)