
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 diagram, $AB$ and $CD$ are straight lines. What is the value of $x?$ [asy]
draw((0,0)--(14,0));
draw((0,5)--(14,5));
draw((4,0)--(6,5)--(11,0));
label("$45^\circ$",(6,4.5),W);
label("$60^\circ$",(6.5,4.5),E);
label("$A$",(0,5),W);
label("$C$",(0,0),W);
label("$B$",(14,5),E);
label("$D$",(14,0),E);
label("$140^\circ$",(4,0),NW);
label("$x^\circ$",(9.5,0),N);

[/asy]

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