Question

2) What should be subtracted from 23 h to get 19/23.​

Answer 1

The answer is 6

Let the required number be ‘x’. after subtracting x from the given numbers, we have 23-x, 30-x, 57-x, 78-x.

At this point, you can choose to be lazy and see which option fits, or solve it the “good” way.

(23−x)/(30−x)=(57−x)/(78−x)

Transposing, we get

x2−101x+1794=x2−87x+1710

14x=84

$↬ \huge\bf \: x \: = \: 6$

Answer 2

Answer:

The answer is 6

Let the required number be ‘x’. after subtracting x from the given numbers, we have 23-x, 30-x, 57-x, 78-x.

At this point, you can choose to be lazy and see which option fits, or solve it the “good” way.

(23−x)/(30−x)=(57−x)/(78−x)

Transposing, we get

x2−101x+1794=x2−87x+1710

14x=84

↬ \huge\bf \: x \: = \: 6↬x=6