25y-9y+78=350 208 : (91-a)=4 14-7t+13= x-10+11x= - вопрос №315003259783502089141471310119817563 от amura20 18.06.2020 09:24

Question

Математика: 25y-9y+78=350 208 : (91-a)=4 14-7t+13= x-10+11x= 9k+8-k= 17z+n-5z+n 6t+t+3-t= z-11-88= 7z+6m-n-m=

amura20 · Answer

25y-9y+78=350  16y=272 y=17   208 :(91-a)=4 208=(91-a)*4 208=364-4a 156=4a a=39   14-7t+13=27-7 x-10+11x=12x-10 9k+8-k=8k+8 17z+n-5z+n=2n+12z 6t+t+3-t=6t+3 z-11-88=z-99 7z+6m-n-m=5m-n+7z...