Question

What should be added to
$7\times \frac{4}{15} to \: get \: 8 \times \frac{2}{5}$


​

Answer 1

Step-by-step explanation:

Ket the required number be x.

According to the question,

x + 7 × 4/15 = 8 × 2/5

x + 28/105 = 16/40

x = 16/40 - 28/105

Answer 2

Step-by-step explanation:

Let the number be X.

According to the question :-

$x + 7 \times \frac{4}{15} = 8 \times \frac{2}{5}$

$x + \frac{28}{15} = \frac{16}{5}$

$x = \frac{16}{5} - \frac{28}{15}$

$x = \frac{48 - 28}{15} (take \: lcm \: of \: 5 \: and \: 15)$

$x = \frac{ \cancel{20}}{\cancel{15}}$

$x = \frac{4}{3}$

So, the number is 4/3

Answer 3

Step-by-step explanation:

Let the number be X.

According to the question :-

$x + 7 \times \frac{4}{15} = 8 \times \frac{2}{5}$

$x + \frac{28}{15} = \frac{16}{5}$

$x = \frac{16}{5} - \frac{28}{15}$

$x = \frac{48 - 28}{15} (take \: lcm \: of \: 5 \: and \: 15)$

$x = \frac{ \cancel{20}}{\cancel{15}}$

$x = \frac{4}{3}$

So, the number is 4/3

Answer 4

Step-by-step explanation:

Let the number be X.

According to the question :-

$x + 7 \times \frac{4}{15} = 8 \times \frac{2}{5}$

$x + \frac{28}{15} = \frac{16}{5}$

$x = \frac{16}{5} - \frac{28}{15}$

$x = \frac{48 - 28}{15} (take \: lcm \: of \: 5 \: and \: 15)$

$x = \frac{ \cancel{20}}{\cancel{15}}$

$x = \frac{4}{3}$

So, the number is 4/3

Answer 5

Step-by-step explanation:

Let the number be X.

According to the question :-

$x + 7 \times \frac{4}{15} = 8 \times \frac{2}{5}$

$x + \frac{28}{15} = \frac{16}{5}$

$x = \frac{16}{5} - \frac{28}{15}$

$x = \frac{48 - 28}{15} (take \: lcm \: of \: 5 \: and \: 15)$

$x = \frac{ \cancel{20}}{\cancel{15}}$

$x = \frac{4}{3}$

So, the number is 4/3

Answer 6

Step-by-step explanation:

Let the number be X.

According to the question :-

$x + 7 \times \frac{4}{15} = 8 \times \frac{2}{5}$

$x + \frac{28}{15} = \frac{16}{5}$

$x = \frac{16}{5} - \frac{28}{15}$

$x = \frac{48 - 28}{15} (take \: lcm \: of \: 5 \: and \: 15)$

$x = \frac{ \cancel{20}}{\cancel{15}}$

$x = \frac{4}{3}$

So, the number is 4/3

Answer 7

Step-by-step explanation:

Let the number be X.

According to the question :-

$x + 7 \times \frac{4}{15} = 8 \times \frac{2}{5}$

$x + \frac{28}{15} = \frac{16}{5}$

$x = \frac{16}{5} - \frac{28}{15}$

$x = \frac{48 - 28}{15} (take \: lcm \: of \: 5 \: and \: 15)$

$x = \frac{ \cancel{20}}{\cancel{15}}$

$x = \frac{4}{3}$

So, the number is 4/3

Answer 8

Step-by-step explanation:

Let the number be X.

According to the question :-

$x + 7 \times \frac{4}{15} = 8 \times \frac{2}{5}$

$x + \frac{28}{15} = \frac{16}{5}$

$x = \frac{16}{5} - \frac{28}{15}$

$x = \frac{48 - 28}{15} (take \: lcm \: of \: 5 \: and \: 15)$

$x = \frac{ \cancel{20}}{\cancel{15}}$

$x = \frac{4}{3}$

So, the number is 4/3