25y-9y+78=350
208 :(91-a)=4
Упростить
14-7t+13=
x-10+11x=
9k+8-k=
17z+n-5z+n
6t+t+3-t=
z-11-88=
7z+6m-n-m=
16у=350-78 16у=272 у=272:16 у=17