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21=t/3
We simplify the equation to the form, which is simple to understand
21=t/3
Simplifying:
21=0.333333333333t
We move all terms containing t to the left and all other terms to the right.
-0.333333333333t=-21
We simplify left and right side of the equation.
-0.333333333333t=-21
We divide both sides of the equation by -00.333333333333 to get t.
t=63.0000000001
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