Question

Question1. What should be subtracted from 3/4 to get 3/8 . Question 2. Find the value -48/42 ÷72/35. Question3. The product of 2 rational number is 9/16. If one of the number is 3/14 Find the other number.​

Answer 1

ans 1=let the unknown number is X

a/q

3/4-x=3/8

(3-4x)/4=3/8

3-4x=3/8×4

3-4x=3/2

-4x=3/2-3

-4x=(3-6)/2

-4x=-3/2

X=-3/2×(-1/4)

X=3/8

ans 2=-48/42÷72/35

-48/42×35/72

8/15

Answer 2

Step-by-step explanation:

1)

let the no. be x

so

$\frac{3}{4} - x = \frac{3}{8} \\ x = \frac{3}{4} - \frac{3}{8} \\ x = \frac{6}{8} - \frac{3}{8} \\ x = \frac{3}{8}$

2 )

$\frac{ - 48}{42} \div \frac{72}{35} \\ \frac{ - 48}{42} \times \frac{35}{72} \\ \frac{-5}{9}$

3)

let the no. be y

$\frac{3}{14} \times y = \frac{9}{16} \\ y = \frac{9}{16} \times \frac{14}{3 } \\ y = \frac{3}{8} \times \frac{7}{1 } \\ y = \frac{21}{8}$