3. Выполни действия. 356:4-91:7.6 603:9+84:6.25 (329 +127):8-105:3 (900-156):6+31・4

356 div 4 - 91 div 7 cdot 6 = 89 - 13 cdot 6 = 89 - 78 = 11 603 div 9 + 84 div 6 cdot 25 = 67 + 14 cdot 25 = 67 + 350 = 417 (329 + 127) div 8 - 105 div 3 = 456 div 8 - 105 div 3 = 57 - 35 = 22 (900 - 156) div 6 + 31 \cdot 4 = 744 div 6 + 31 \cdot 4 = 124 + 124 = 248