Question

add the following rational numbers (i) 3/7+2/7 (ii) -11/13+9/13 (iii)-1/6+3/10 (iv)-5/12+-7/18 (v) 6/15+-7/25 (vi) 13/14+9/-7 (vii) 3 3/4 + 4 1/3 (viii) 2 5/7+-3/-14​ do in formula guys​

Answer 1

Step-by-step explanation:

i) 5/7

ii) -2/13

iii) LCM = 30

-1/6×5/5=-5/30

3/10×3/3= 9/30

-5/30+9/30= 4/30=2/15

iv) -5/12+-7/18

LCM= 36

-5/12×3/3=-15/36

-7/18×2/2=-14/36

-15/36-14/36=-29/36

v) 6/15+-7/25

LCM =150

6/15× 10/10=60/150

-7/25×6/6=-42/150

60/150-42/150= 18/150=9/75=3/25

vi)13/14+9/-7

LCM = 14

13/14×1/1=13/14

9/-7× -2/-2= -18/14

13/14-18/14= -5/14

vii)15/4+13/3(converting mixed fraction into improper fraction)

LCM=12

15/4×3/3=45/12

13/3×4/4=52/12

97/12

viii) 19/7+-4/-14

LCM= 14

19/7×2/2= 38/14

-4/-14×-1/-1= 4/14

38/14+4/14= 42/14=21/7=3

hope this answer is helpful.

Answer 2

Answer:

Step-by-step explanation:

add the following rational numbers

13_7 and 3_7