We have
.
From this we have system of inequality

We have to simplify both inequalities

So we can conclude that

Hope this helps.
Answer:
<em>t = -1.1</em>
Step-by-step explanation:
3.1 - 1.3 = t + 2.9
1.8 = t + 2.9
-1.1 = t
t = -1.1
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I hope this helps you.