150*цркп78b*hrofwgh-reugh)~!>;,;e,gfl[vkpeW{OHN)*H#@[email protected]*=-i2tru869-5u4u99Y&%R$^^)&_(+*&*%%#[email protected]#$%^&*()_
1)2m^3/5c^5
2) 2x^2/3y^3
3) 40a^7/m-n
4) 9/x+5
1 20% (100:5)2=20
2 91% (100-9)%=91%
200< 3n< 1000