Solve for t
t=\frac{4}{15}\approx 0.266666667
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-1-5t+20t=3
Add 20t to both sides.
-1+15t=3
Combine -5t and 20t to get 15t.
15t=3+1
Add 1 to both sides.
15t=4
Add 3 and 1 to get 4.
t=\frac{4}{15}
Divide both sides by 15.
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