Convert all the double signs to a single sign before solving. Remember, two minus (negative) signs combine to form a plus (positive) sign, and a plus (positive) sign and a minus (negative) sign combine to form a minus (negative) sign.

$\displaystyle -12 -(-3)-(-4)+5$

$\displaystyle -12+3+4+5=0$

In order to answer this question, we can solve for $\displaystyle x$. When solving for $\displaystyle x$ we need to isolate the $\displaystyle x$ variable on one side of the equation. 

We can subtract $\displaystyle 11$ to both sides in order to isolate the variable, $\displaystyle x$.

$\displaystyle \frac{\begin{array}[b]{r}11+x=0\\ -11\ \ \ \ -11\end{array}}{\\\\x=-11}$

In order to answer this question, we can solve for $\displaystyle x$. When solving for $\displaystyle x$ we need to isolate the $\displaystyle x$ variable on one side of the equation. 

We can subtract $\displaystyle 24$ to both sides in order to isolate the variable, $\displaystyle x$.

$\displaystyle \frac{\begin{array}[b]{r}24+x=0\\ -24\ \ \ \ -24\end{array}}{\\\\x=-24}$

In order to answer this question, we can solve for $\displaystyle x$. When solving for $\displaystyle x$ we need to isolate the $\displaystyle x$ variable on one side of the equation. 

We can subtract $\displaystyle 38$ to both sides in order to isolate the variable, $\displaystyle x$.

$\displaystyle \frac{\begin{array}[b]{r}38+x=0\\ -38\ \ \ \ -38\end{array}}{\\\\x=-38}$

In order to answer this question, we can solve for $\displaystyle x$. When solving for $\displaystyle x$ we need to isolate the $\displaystyle x$ variable on one side of the equation. 

We can subtract $\displaystyle 62$ to both sides in order to isolate the variable, $\displaystyle x$.

$\displaystyle \frac{\begin{array}[b]{r}62+x=0\\ -62\ \ \ \ -62\end{array}}{\\\\x=-62}$

In order to answer this question, we can solve for $\displaystyle x$. When solving for $\displaystyle x$ we need to isolate the $\displaystyle x$ variable on one side of the equation. 

We can subtract $\displaystyle 70$ to both sides in order to isolate the variable, $\displaystyle x$.

$\displaystyle \frac{\begin{array}[b]{r}70+x=0\\ -70\ \ \ \ -70\end{array}}{\\\\x=-70}$

In order to answer this question, we can solve for $\displaystyle x$. When solving for $\displaystyle x$ we need to isolate the $\displaystyle x$ variable on one side of the equation. 

We can subtract $\displaystyle 86$ to both sides in order to isolate the variable, $\displaystyle x$.

$\displaystyle \frac{\begin{array}[b]{r}86+x=0\\ -86\ \ \ \ -86\end{array}}{\\\\x=-86}$

In order to answer this question, we can solve for $\displaystyle x$. When solving for $\displaystyle x$ we need to isolate the $\displaystyle x$ variable on one side of the equation. 

We can subtract $\displaystyle 99$ to both sides in order to isolate the variable, $\displaystyle x$.

$\displaystyle \frac{\begin{array}[b]{r}99+x=0\\ -99\ \ \ \ -99\end{array}}{\\\\x=-99}$

In order to answer this question, we can solve for $\displaystyle x$. When solving for $\displaystyle x$ we need to isolate the $\displaystyle x$ variable on one side of the equation. 

We can subtract $\displaystyle 59$ to both sides in order to isolate the variable, $\displaystyle x$.

$\displaystyle \frac{\begin{array}[b]{r}59+x=0\\ -59\ \ \ \ -59\end{array}}{\\\\x=-59}$

In order to answer this question, we can solve for $\displaystyle x$. When solving for $\displaystyle x$ we need to isolate the $\displaystyle x$ variable on one side of the equation. 

We can subtract $\displaystyle 19$ to both sides in order to isolate the variable, $\displaystyle x$.

$\displaystyle \frac{\begin{array}[b]{r}19+x=0\\ -19\ \ \ \ -19\end{array}}{\\\\x=-19}$