Question

(-31) = [(-30) +(-1)]​

Answer 1

Here we will follow BODMAS rule

(-31) = [(-30) + (-1)]

☆ lets open the square brackets

(-31 ) = (-30) + (-1)

-31 = -30 - 1

Here ( - ) ( - ) = +

(But sign of greater term)

-31 = -31

When - 31 will move on the other side it will be in + 31

-31 + 31

= -1

Answer 2

$\large{\underline{\purple{\text{Solution}}}}$

$\sf{(-31) = [(-30) +(-1)]} \\ \sf{ = > ( - 31) = - 30 - 1} \\ \sf{ = > ( - 31) = - 31}$

$\sf{\orange{ = > - 31 + 31 = 0}}$