(3/7)t+21=-15

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Solution for (3/7)t+21=-15 equation: 



(3/7)t+21=-15

We move all terms to the left:

(3/7)t+21-(-15)=0



Domain of the equation: 7)t!=0

t!=0/1

t!=0

t∈R



We add all the numbers together, and all the variables

(+3/7)t+21-(-15)=0

We add all the numbers together, and all the variables

(+3/7)t+36=0

We multiply parentheses

3t^2+36=0

a = 3; b = 0; c = +36;
Δ = b2-4ac
Δ = 02-4·3·36
Δ = -432
Delta is less than zero, so there is no solution for the equation

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