
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In the new diagram, what is the value of $x$?

[asy]
draw((0,0)--(18,0),black+linewidth(1));
draw((18,0)--(18,-6),black+linewidth(1));
draw((0,0)--(4,8)--(18,-6),black+linewidth(1));
draw((18,0)--(18,-0.5)--(17.5,-0.5)--(17.5,0)--cycle,black+linewidth(1));
label("$70^{\circ}$",(4.5,7),S);
label("$50^{\circ}$",(1,0),NE);
label("$x^{\circ}$",(18.25,-5),NW);
[/asy]

Present the answer in LaTex format: \boxed{Your answer}
user