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t-(-7)=13
We simplify the equation to the form, which is simple to understand
t-(-7)=13
Remove unnecessary parentheses
t+7=13
We move all terms containing t to the left and all other terms to the right.
+1t=+13-7
We simplify left and right side of the equation.
+1t=+6
We divide both sides of the equation by 1 to get t.
t=6
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