Question

divide the product of 18/35 and 7/9 by - 12/45​

Answer 1

Step-by-step explanation:

18/35 × 7/9

2/5

now on dividing,

2/5× -45/12

-9/6

-3/2 answer....

Answer 2

18/35+7/9

_________

-12/45

Add the following rational numbers:

(i) -5/7 and 3/7

(ii) -15/4 and 7/4

(iii) -8/11 and -4/11

(iv) 6/13 and -9/13

Solution:

Since the denominators are of same positive numbers we can add them directly

(i) -5/7 + 3/7 = (-5+3)/7 = -2/7

(ii) -15/4 + 7/4 = (-15+7)/4 = -8/4

Further dividing by 4 we get,

-8/4 = -2

(iii) -8/11 + -4/11 = (-8 + (-4))/11 = (-8-4)/11 = -12/11

(iv) 6/13 + -9/13 = (6 + (-9))/13 = (6-9)/13 =