3x+7(x=20/7)

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Solution for 3x+7(x=20/7) equation: 



3x+7(x=20/7)

We move all terms to the left:

3x+7(x-(20/7))=0

We add all the numbers together, and all the variables

3x+7(x-(+20/7))=0

We multiply all the terms by the denominator


3x*7))+7(x-(+20=0

Wy multiply elements

21x^2+20=0

a = 21; b = 0; c = +20;
Δ = b2-4ac
Δ = 02-4·21·20
Δ = -1680
Delta is less than zero, so there is no solution for the equation

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