#### Answer

a.) 10
b.) -1

#### Work Step by Step

a.)$\mid$2-$\mid$-12$\mid$$\mid$
Find the Absolute of -12
$\mid$-12$\mid$ = -(-12) = 12
Rewrite
$\mid$2-12$\mid$
Subtract
$\mid$-10$\mid$
Find the Absolute value of -10
$\mid$-10$\mid$ = -(-10) = 10
b.) -1 - $\mid$1 - $\mid$-1$\mid$$\mid$
Find the Absolute value for -1
$\mid$-1$\mid$ = -(-1) = 1
Rewrite
-1 - $\mid$1-1$\mid$
-1 - $\mid$0$\mid$
$\mid$0$\mid$ = 0
-1 - 0 = -1