Раскройте скобки (4a+5b)*13 10*(17x-23y+2) 4*(29c-19+38d)
(4a+5b)*13=52а+65b 10*(17x-23y+2)=170x-230y+20 4*(29c-19+38d)=116c-76+152d
(4a+5b)*13=52a+65b 10*(17x-23y+2)=170x-230y+20 4*(29c-19+38d)=116c-76+152d