Question

What number should be subtracted from 21 / 23 to get -6 2 / 23?
a. 6
b. 7
c. 8
d. 9

Answer 1

Answer:

9

Step-by-step explanation:

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Answer 2

Answer:

Option (b) 7 is the correct answer. On subtracting 7 from $\frac{21}{23}$ we get $-6 \frac{2}{23}$.

Step-by-step explanation:

Explanation:

Given that, $\frac{21}{23}$

Now, we check one by one.

So, when we subtract 6 from $\frac{21}{23}$ we get,

⇒   $\frac{21}{23}$ - 6= $\frac{21 - 138 }{23}$ = $\frac{-117}{23}$  which is not equal to $-6\frac{2}{23}$.

Now, we subtract 7 from $\frac{21}{23}$ what we get,

⇒ $\frac{21}{23} - 7$ = $\frac{21 - 161}{23}$ = $\frac{-140}{23}$

On dividing -140 by 23 we get,

         23) 140 (6

                -138

                     2

So, on dividing -140 by 23 we get quotient = 6 and remainder = 2.

This can be written as, $-6 \frac{2}{23}$

Final answer:

Hence, on subtracting 7  $\frac{21}{23}$ we get $-6 \frac{2}{23}$.

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