7с-11d+((-3c-4(2d+3))-(4d-2(7+4c)))-3(c-5d)
Ответ:
Пошаговое объяснение:
1)7c-11d+((-3c-8d-12)-(4d-14-8c)-3c+15d)
2)7c-11d+(-3c-8d-12-4d+14+8c-3c+15d)
3)7c-11d-3c-8d-12-4d+14+8c-3c+15d
4)9c-8d+2
9c-8d+2
7c-11d+((-3c-8d-12)-(4d-14-8c)-3c+15d) =7c-11d+(-3c-8d-12-4d+14+8c-3c+15d) =7c-11d-3c-8d-12-4d+14+8c-3c+15d =9c-8d+2