6n-21=-2n(1-3n)

Solution for 6n-21=-2n(1-3n) equation:

6n-21=-2n(1-3n)

We move all terms to the left:

6n-21-(-2n(1-3n))=0

We add all the numbers together, and all the variables

6n-(-2n(-3n+1))-21=0


We calculate terms in parentheses: -(-2n(-3n+1)), so:

-2n(-3n+1)

We multiply parentheses

6n^2-2n

Back to the equation:

-(6n^2-2n)


We get rid of parentheses

-6n^2+6n+2n-21=0

We add all the numbers together, and all the variables

-6n^2+8n-21=0

a = -6; b = 8; c = -21;
Δ = b2-4ac
Δ = 82-4·(-6)·(-21)
Δ = -440
Delta is less than zero, so there is no solution for the equation