Question

if ur answer helps me I will mark your answer the brainliest
this is operations of rational numbers can u solve all of them fast​ with explanation​​

Answer 1

Step-by-step explanation:

13 a bit both r like fractions means denominator same so 8/5÷16/5

16/5 reciprocates so 8/5*5/16=1/2

b bit -8/77x22*49/55= -8/7x 2*49/55= -8x 14/55= -112/55

Reciprocal of any number is just 1/number

14 th question both are true

15. 25/13

16.3/7÷ 7/3= 3*3/7*7= 9/49

20. area = length* breadth

=168/5*40/3

on cancellation56*8= 448

19. Total sal= 24000

Amt spent on food= 1/6 of 24000= 4000

Amt left after spending on food is 24000-4000= 20000

House rent= 3/5 of 20000=12000

Amt left after house rent =20000-12000= 8000

Amt spent on education= 5/8of 8000= 5000

Amt left with her= 8000-5000= 3000 rupees