Question

keep going. 16 + = 0 -16 + = 0 24 + = 0 -24 + = 0 -16 -24 24 16

Explanation:

Step1: Solve for first blank

Let $x$ be the blank. $16 + x = 0 \implies x = 0 - 16 = -16$

Step2: Solve for second blank

Let $x$ be the blank. $-16 + x = 0 \implies x = 0 - (-16) = 16$

Step3: Solve for third blank

Let $x$ be the blank. $24 + x = 0 \implies x = 0 - 24 = -24$

Step4: Solve for fourth blank

Let $x$ be the blank. $-24 + x = 0 \implies x = 0 - (-24) = 24$

Answer:

$16 + \boldsymbol{-16} = 0$
$-16 + \boldsymbol{16} = 0$
$24 + \boldsymbol{-24} = 0$
$-24 + \boldsymbol{24} = 0$