One can solve this by first using order of operations, and then combining like terms.
First is parenthesis
9x + 2x(9) - 2(9x)
Now we do the multiplication
9x + 18x - 18x
Now we combine like terms
9x
The 22 students who answered juice would represent the smallest wedge in a pie chart.
Answer:
I'd say that a is 6 2/3 units long
Step-by-step explanation: