False. The sum is -4:
-5 + -2 = -7
-7 + 3 = -4
If t/5 = 7/r
and you flipped 7/r to r/7... flip t/5 too.
If t/5 = 7/r, then 7/r = 5/t
5/t should be your answer
hope this helps
The elimination method for solving linear systems<span>. Another way of </span>solving<span> a </span>linear system<span> is to </span>use the elimination method<span>. In the </span>elimination method<span> you either add or subtract the </span>equations<span> to get an </span>equation<span> in one variable.</span>