Question

what number should be subtract -5/7 toget -1 ​

Answer 1

Let the no. be x

then -5/7 - x = -1

x = -5/7+1

x = 2 /7

Answer 2

Answer:

$\frac{-2}{7}$ should be subtracted from $\frac{-5}{7}$ to get $- 1$

Step-by-step explanation:

Number to be subtracted = $X$

Number from which X should be =$\frac{-5}{7}$

Resulting number =$-1$

According to the question

$\frac{-5}{7}$ -  $X$ = $-1$

Transposing

$X$ = $-1$ + $\frac{5}{7}$

Lcm of 1 and 7 = 7

So,

$X$ = $\frac{-7}{7}$ + $\frac{5}{7}$

$X$ = $\frac{-2}{7}$

Check

$\frac{-5}{7}$ -  $X$ = $-1$

=$\frac{-5}{7}$ -  $\frac{-2}{7}$ = $-1$

=$\frac{-7}{7}$ = $-1$

=$-1$ = $-1$

Hence checked