Question

(-31) × (-100) Need full explanation​

Answer 1

3100

RULES :

+ × + = +

- × - = +

- × + = -

+ × - = -

Answer 2

Answer:

As in multiplication same sign the positive sign on the solution

So - - = +

Now 31×100 =3100

Hence you can write + 3100

or directly you can 3100