Question

Evaluate: $30+\left[\right(-2\times (25-\overline{13-3})\left)\right]$.

Answer 1

To evaluate an expression , we must first simplify the expression below the vinculum, then inside the small bracket , then inside the curly bracket , and finally inside the square bracket using the DMAS rule,

Thus, $30+\left[\right(-2\times (25-\overline{13-3})\left)\right]$
$=30+\left[\right(-2\times (25-10)\left)\right]$

[Removing vinculum]
$=30+\left[\right(-2\times 15\left)\right]$

[Removing small bracket ]

$=30+\left[\right(-30\left)\right]$
[Multiplication : $-2\times 15]$

$=30+[-30]$
[Removing curly bracket]

$=30-30$
[Removing square bracket]
$=0$

$\therefore$ The value of $30+\left[\right(-2\times (25-\overline{13-3})\left)\right]$ is $0$.