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t-13=7(10,13,17,20)
We simplify the equation to the form, which is simple to understand
t-13=7(10,13,17,20)
Reorder the terms in parentheses
t-13=+(+70.91)
Remove unnecessary parentheses
+t-13=+70.91
We move all terms containing t to the left and all other terms to the right.
+1t=+70.91+13
We simplify left and right side of the equation.
+1t=+83.91
We divide both sides of the equation by 1 to get t.
t=83.91
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