Question

9x-3(15+8x); ¼(32d+24c)-3(8d-c)
помогите упростить

Answer 1

9x – 3(15 + 8x)= 9x – 45 – 24x = - 15x – 45 = -15(x  + 3)

¼( 32d + 24c) – 3(8d – c)= 8d + 6c – 24d + 3c = 8d + 6c – 24d + 3c = 9c – 16d

Answer 2

спасибо!