Question

which number should be subtracted from -2 to obtain 7/11​

Answer 1

Answer:

-29/11

Step-by-step explanation:

Let the unknown no. be 'x'

               7

-2 (-) x =  ---

               11

⇒ 11 × (-2 - x) = 7

       -22 - 11x = 7

  7 + 22 + 11x = 0

        29 + 11x = 0

                 11x = -29

                 ∴ x = -29 /11

Hence, -29/11 should be subtracted from -2 to obtain 7/11.

Answer 2

Answer:

Let the number subtracted be x.

so;

x+-2=7/11

x=7/11-2/1

x= 7/11-(-1/2)

when we did the reciprocal of 2/1 it form -1/2 its a law#### so 2/1 become -1/2

now - ; - = + minus minus is equal to plus so

7/11 + 1/2=x

Lcm og 2 and 11 is 22

7/11 ×2/2= 14/22

1/2×11/11=11/22

14/22+11/22=25/22

so the no. subtracted is 25/22 ////