81t^88 *z^19*c^76 ______________ 60t^87*z^18*c^74 Срочно!
= 81/60 * t⁸⁸⁻⁸⁷ * z¹⁹⁻¹⁸ * c⁷⁶⁻⁷⁴ = 1,35tzc²