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Answer: -21t
Step-by-step explanation: It says -7t -14t. In order to do this, the equation could look like this: (-7t) + (-14t) which is -21t.
Step-by-step explanation: Since both numbers both have the same variable, you can do -7-14. This equation will give you -21, and you just have to add the "t" at the end of your answer.