3/7*t+21=-15

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



3/7t+21=-15

We move all terms to the left:

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



Domain of the equation: 7t!=0

t!=0/7

t!=0

t∈R



We add all the numbers together, and all the variables

3/7t+36=0

We multiply all the terms by the denominator


36*7t+3=0

Wy multiply elements

252t+3=0

We move all terms containing t to the left, all other terms to the right

252t=-3

t=-3/252

t=-1/84

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