Question

va rog repede
dau coroana

Answer 1

la a) nr care lipseste este:-118,28

Answer 2

a) (- 111,72) + (- 48,36) = (- 41,8) + x
- 160,08 = (- 41,8) + (- 118,28)
- 160,08 = - 160,28
b) 5/9 + (- 3/2) = 7/3 + x
10/18 - 27/18 = 42/18 + x
- 17/18 = 42/18 - 59/18
- 17/18 = - 17/18
c) - 11/36 - (- 7/24) = - 5/72 + x
- 22/72 + 21/72 = - 5/72 + x
- 1/72 = - 5/72 + 4/72
- 1/72 = - 1/72
d) (- 9,83) + x = 13 - (- 2/5)
- 9,83 + x = 13 + 0,4
- 9,83 + x = 13,04
- 9,83 + 22,87 = 13,04
13,04 = 13,04