9*5 + 9*3 / 2*27 сократите дробь
9*5=45 9*3=27 45+27=72 2*27=54 72/54=4/3 Делим на 18
9×5 + 9×3 / 2×27=45+27/2×27=72/2×27=36/27=4/3