7x+3=1/3(19-21x)

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Solution for 7x+3=1/3(19-21x) equation: 



7x+3=1/3(19-21x)

We move all terms to the left:

7x+3-(1/3(19-21x))=0



Domain of the equation: 3(19-21x))!=0

x∈R



We add all the numbers together, and all the variables

7x-(1/3(-21x+19))+3=0

We multiply all the terms by the denominator


7x*3(-21x+19))-(1+3*3(-21x+19))=0

Wy multiply elements

21x^2(-+9x(-=0

We use the square of the difference formula

21x^2(-9x(-=0

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