
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
Angela has $x$ marbles, Ben has three times as many marbles as Angela, Carl has twice as many marbles as Ben, and David has four times the number of marbles Carl has. If together Angela, Ben, Carl, and David have 156 marbles, what is the value of $x$?

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