What is the answer to (-9) ×13+1-90=?

 Using the order of operations (PEMDAS), we need to start with the parentheses first, but there are no parentheses in this expression. So we move on to exponents, but there are no exponents either. 


Next, we have multiplication and division. Here, we only have one multiplication operation: (-9) × 13, which equals -117. 


After that, we move to addition and subtraction. We have two subtraction operations: -117 - 90, which equals -207. Then we add 1 to get the final answer:


(-9) × 13 + 1 - 90 = -117 - 90 + 1 = -207 + 1 = -206


Therefore, the answer is -206.

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