SUMAS Y RESTAS DE FRACCIONES POSITIVAS Y NEGATIVAS.

SUMA POSITIVA

100

2/7 + 4/7=

6 / 7

200

1/3 + 2/5=

5/15 + 6/15 = 11/15

300

2/6 +1/6 =

3/6 = 1/2

400

3/9 + 2/6 = 

2/3

500

4/12 + 3/8 = 

17/24

SUMA NEGATIVA

100

−3/7 + −2/7 =

= 5/7

200

−1/3 + −2/5 =

−5/15 + −6/15= −11/15

300

-1/4 + -3/8 =

= -5/8

400

-3/6 + -5/10 =

= -1

500

-4/12 + -3/8 =

= -17/24

RESTA POSITIVA

100

7/9 - 4/9 =

= 3/9

200

3/4 - 1/6 = 

= 7/12

300

5/6 - 1/4 =

= 7/12

400

8/12 - 2/9 =

= 4/9

500

10/20 - 4/15 =

= 7/30

RESTA NEGATIVA

100

- 7/8 - -4/8 =

= -3/8

200

-3/5 - -2/3 = 

= 1/15

300

-5/6 - -1/4 =

= -7/12

400

-7/12 - -1/8 =

= -11/24

500

-10/20 - -4/15 =

= -7/30