Question

what number should be subtract from 3by7 to get 5by4​

Answer 1

$\huge\underline\mathrm\purple{Answer}$

Let the number to be subtracted be x

According to the question,

$\large\bold{\frac{3}{7} - x = \frac{5}{4}}$

$\large\bold{ - x = \frac{5}{4} - \frac{3}{7}}$

$\large\bold{- x = \frac{35 - 12}{28} }$

$\large\bold{ - x = \frac{23}{28}}$

$\large\bold{\:\:x = - \frac{23}{28}}$

Answer 2

Answer:

x = (-23/28)

Step-by-step explanation:

Let the required number be x

(3/7) – x = (5/4)

– x = (5/4) – (3/7)

The LCM of 4 and 7 is 28

Consider (5/4) = (5/4) × (7/7) = (35/28)

Again (3/7) = (3/7) × (4/4) = (12/28)

On substituting

-x = (35/28) – (12/28)

– x = (35 -12)/28

– x = (23/28)

x = (-23/28)