Question

if twice a number is added to 5 by 7 we get 7 by 3 find the number​

Answer 1

Let , The unknown number be x

$\to2x + \frac{5}{7} = \frac{7}{3} \\ \\ \to 2x = \frac{7}{3} - \frac{5}{7} \\ \\ \to2x = \frac{49 - 15}{21} \\ \\ \to 2x = \frac{35}{21} \\ \\ \to x = \frac{35}{42}$

Hence , The required number is 35/42

Answer 2

Step-by-step explanation:

let, the number be x. A/Q 2x+5/7=7/3=2x=7/3-5/7=2x=34/21=x=34/21×1/2=x=17/21