(-10 5/6)+(-3 1/9)=
(-0,56)+(-8,4)=
15 3/7+(-9 1/14)=
(-2,7)+(-4,3)=
(0,76)+3,89=
(-0.5)+(-0,25)+(-2 3/8) =
3.75-28 1/8=
0,25-(-6,45)=
(-3 1/4)-(-2 2/3)-4 1/12-(-5 1/6)=
(0,5)-8,32-(-9,3)-45,8=
2,4-(-7,2)+(-3,6)+4,7=
0,4+(-1/5)-(-5,8)-6 1/2 +8,5=
-8x(-5/12)=

1

Odpowiedzi

2010-02-16T13:52:38+01:00
1.
(-10 5/6)+(-3 1/9) =-65/6-28/9 = -585/54 - 168/54 = -753/54 = -13⁵¹/₅₄
2.
(-0,56)+(-8,4) = - 8,96
3.
15 3/7+(-9 1/14) = 108/7 - 127/14 = 216/14 - 127/14 = 89/14 = 6⁵/₁₄
4.
(-2,7)+(-4,3) = -7
5.
(0,76)+3,89 = 4,65
6.
(-0.5)+(-0,25)+(-2 3/8) =-0,5-0,25-2,375 = -3,125
7.
3.75-28 1/8 = 3,75-28,125 = -24,375
8.
0,25-(-6,45) = 6,7
9.
(-3 1/4)-(-2 2/3)-4 1/12-(-5 1/6) = -13/4+8/3-49/12+31/6 = -39/12+32/12-49/12+62/12 = 6/12 = ½
10.
(0,5)-8,32-(-9,3)-45,8 = -44,32
11.
2,4-(-7,2)+(-3,6)+4,7 = 10,7
12.
0,4+(-1/5)-(-5,8)-6 1/2 +8,5 = 0,4-0,2+5,8+8,5 = 8
13.
-8x(-5/12) = 40/12 = 3⅓