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3/4t+1/3(21+t)=11
We move all terms to the left:
3/4t+1/3(21+t)-(11)=0
Domain of the equation: 4t!=0
t!=0/4
t!=0
t∈R
Domain of the equation: 3(21+t)!=0We add all the numbers together, and all the variables
t∈R
3/4t+1/3(t+21)-11=0
We calculate fractions
(9tt/(12t^2t+4t/(12t^2t-11=0
We can not solve this equation
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