Question

what number should be subtracted from
-7/8 to get 5/8 ​

Answer 1

Let the required number be a.

Then, -7/8 - a = 5/8

=> -a = 5/8 - (-7/8)

=> -a = 5/8 + 7/8

=> -a = (5+7)/8 = 12/8 = 3/2

=> a = -(3/2)

Therefore, -3/2 must be subtracted from -7/8 to get 5/8.

Answer 2

Given:

1. The fraction $-\frac{7}{8}$

To find:

1. The number that needs to be subtracted from $-\frac{7}{8}$ to obtain $\frac{5}{8}$

Solution:

We are given a negative fraction (-7/8) and asked to obtain a number that will be subtracted from (-7/8) to give us (5/8)

To accomplish this let us assume the number to be subtracted = x

then,

$-\frac{7}{8} - x = \frac{5}{8}$

$-x = +\frac{7}{8} + \frac{5}{8}$

$+ x = -\frac{7}{8} - \frac{5}{8}$

$+ x = -\frac{12}{8}$

Thus, we need to subtract (-12/8) which is (-3/2) in the reduced form from (-7/8) to obtain the answer as (5/8).