Answer
5t-7t=-2t
Work Step by Step
The expression 5t-7t can be simplified first by factoring out t, to reexpress it as t(5-7) which equals t(-2) which can be simplified down to -2t.
Another way to go about simplifying this expression is to recognize the fact that 5t and -7t are like terms because the t terms are both raised to the same power (the first power). Therefore, we can simply subtract 7t from 5t to get -2t.
