answer: $19.25
explanation: 11+1=12, 231/12=19.25
4x-8=3x+9, I think that's the answer
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Step-by-step explanation:


(100-9^2)/3
PEMDAS: parenthesis, exponents, multiply, divide, add, subtract
Lets' work on the parethesis first.
100-9^2
We can do the exponent first, 9^2=81, so 100-81=19
Then we divide and 19/3 is your final answer.