Question

what should be added to twice the rational number -7/5 to get 3/7 ?

Answer 1

let the no. added twice be x
2×-7/5+ x= 3/7
-14/5+ x = 3/7
x=3/7+14/5
x=( 15+ 98)/(5×7)
x= 113/35

Answer 2

Answer:

The required number is $\frac{113}{35}$

Step-by-step explanation:

To find : What should be added to twice the rational number $-\frac{7}{5}$ to get $\frac{3}{7}$ ?

Solution :

Let the number be 'x'.

According to question,

$2\times (-\frac{7}{5})+x=\frac{3}{7}$

Solving the equation,

$-\frac{14}{5}+x=\frac{3}{7}$

$x=\frac{3}{7}+\frac{14}{5}$

$x=\frac{15+98}{35}$

$x=\frac{113}{35}$

Therefore, The required number is $\frac{113}{35}$