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12-3t=7
We simplify the equation to the form, which is simple to understand
12-3t=7
We move all terms containing t to the left and all other terms to the right.
-3t=+7-12
We simplify left and right side of the equation.
-3t=-5
We divide both sides of the equation by -3 to get t.
t=1.66666666667
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