1) -2 1/2 : 31/2 = -2.5 / (3 + 1/2) = -2.5 / (7/2) = -2.5 * 2/7 = -5/7
2) -4 2/3 : (-11/6) = -4.666... / (-1.833...) = 14/3
3) 3 3/8 (-2 1/4) = 27/8 (-9/10) = -243/80
4) -7 1/2 : 3 3/4 = -15/2 : 15/4 = -15/2 * 4/15 = -2
5) -5 4/9 : (-2 1/3) = -49/9 : (-7/3) = 49/9 * 3/7 = 7
6) 9 1/3 : (-6 2/9) = 28/3 : (-56/9) = -28
Уравнения:
1) -1.22x = 6.1x = 6.1 / -1.22x = -5
2) -8.9(-x) = 11.578.9x = 11.57x = 11.57 / 8.9x = 1.3
3) 9.6(-y) = -43.2-y = -43.2 / 9.6y = 43.2 / 9.6y = 4.5
4) -5.3x = 2.65x = 2.65 / -5.3x = -0.5
5) 0.3(-x) = -2.34-x = -2.34 / 0.3x = 2.34 / 0.3x = 7.8
6) -6.1y = 19.52y = 19.52 / -6.1y = -3.2
1) -2 1/2 : 31/2 = -2.5 / (3 + 1/2) = -2.5 / (7/2) = -2.5 * 2/7 = -5/7
2) -4 2/3 : (-11/6) = -4.666... / (-1.833...) = 14/3
3) 3 3/8 (-2 1/4) = 27/8 (-9/10) = -243/80
4) -7 1/2 : 3 3/4 = -15/2 : 15/4 = -15/2 * 4/15 = -2
5) -5 4/9 : (-2 1/3) = -49/9 : (-7/3) = 49/9 * 3/7 = 7
6) 9 1/3 : (-6 2/9) = 28/3 : (-56/9) = -28
Уравнения:
1) -1.22x = 6.1
x = 6.1 / -1.22
x = -5
2) -8.9(-x) = 11.57
8.9x = 11.57
x = 11.57 / 8.9
x = 1.3
3) 9.6(-y) = -43.2
-y = -43.2 / 9.6
y = 43.2 / 9.6
y = 4.5
4) -5.3x = 2.65
x = 2.65 / -5.3
x = -0.5
5) 0.3(-x) = -2.34
-x = -2.34 / 0.3
x = 2.34 / 0.3
x = 7.8
6) -6.1y = 19.52
y = 19.52 / -6.1
y = -3.2