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13+-t=-t+7
We move all terms to the left:
13+-t-(-t+7)=0
We add all the numbers together, and all the variables
-t-(-1t+7)+13+=0
We add all the numbers together, and all the variables
-1t-(-1t+7)=0
We get rid of parentheses
-1t+1t-7=0
We add all the numbers together, and all the variables
-7!=0
There is no solution for this equation
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