Question

Q1). multiply the sum of 2/9 and -3/11 by the sum of 5/2 and 7/8

Q2). simplify
1). (12/8 x 16/10) + (-3/9 x 18/-16)

2). 1- 3/8 x 18/-35 x 7/-9

Q3). find the cost of 4 1/3 litre milk at ₹16 1/2 per litre.

Q4). a train is moving at an average speed of 651/3 km)h. how much distance will it cover in 6 1/2 hours?

Q5). verify the x + y = y + x by taking
1). x = -1/5, y= 2/7

Q6). verify the a x (b x c) = (a x b) x c by taking 1). a= 1/3, b = -2/3, c = 4/3

Q7). verify the a x (b+c) = (a x b) + ( a x c) by taking 1). a = 5/6, b =-3/4, c = 7/8

Q8). verify that: X x (y - z) = X x Y - X x Z when. 1). x = 1/2, y= 3/4, z = -4/5

Q9). simplify
1). -15/7÷ (-30)

Q10). the product of two rational numbers is-56/63. if one of the number is 14/32. find the other.

Q11). divide the sum of 65/13 and 5/7 by their difference.

Q12). by what rational number should -35/6 be divided to get -15/2?

Q13). verify the following are true or false
1). 13/5 ÷ 26/15 = 26/15 ÷ 13/5 ​

Answer 1

Answer:

Answer:(Q.1) (2/9+(-3/11)*(5/2+7/8)

Answer:(Q.1) (2/9+(-3/11)*(5/2+7/8) =(22-27/99)*(20+7/8)

Answer:(Q.1) (2/9+(-3/11)*(5/2+7/8) =(22-27/99)*(20+7/8) = -5/99*27/8

Answer:(Q.1) (2/9+(-3/11)*(5/2+7/8) =(22-27/99)*(20+7/8) = -5/99*27/8 = - 135/792