Final answer:
The missing number to make the equation true is 1.
Step-by-step explanation:
To find the missing number in the equation 2/3 - 1/3 = 233, we need to solve the subtraction problem on the left side. The denominators of the fractions are already the same, so we can subtract the numerators: 2 - 1 = 1. Therefore, the missing number is 1 to make the equation true.
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