
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
Given that $\left\{\begin{array}{l}{x=1}\\{y=1}\end{array}\right.$ is a solution to the equation $2x-ay=3$, determine the value of $a$.

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