Координаты точки Р - ( -4, 1,5 ). Площадь ( S ) MNKP = KN * NM = (4+3) * (8,5 - 1,5) = 7 * 7 = 49 ед². Периметр ( P ) MNKP = ( KN + NM ) * 2 = (7+7)*2 = 28 ед.
81=63+18
18÷9=2
63÷9=7
72=45+27
27÷9=3
45÷9=5
45=27+18
18÷9=2
27÷9=3
32/9 + 7/12 = (128 + 21) / 36 = 149/36 = 4 5/36
4/5 + 36/7 = (28 + 180) / 35 = 208/35 = 5 23/35
92/5 + 26/3 = (276 + 130) / 15 = 406/15 = 27 1/15
71/14 + 46/21 = (213 + 92) / 42 = 305 / 42 = 7 11/42
2*2=4
2*1/3=2/3
далее
4+2/3=4целых2/3
3/7-[12+1/4[=3/7-4/4=-1/4
-3/7+[1/14-2/21]=-3/7+[-1/42]=-19/42
-2/5+[1/10-7/15]=-2/5+[-11/30]=-23/30