3x(x+5)-5=7x(3+3x)

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Solution for 3x(x+5)-5=7x(3+3x) equation: 



3x(x+5)-5=7x(3+3x)

We move all terms to the left:

3x(x+5)-5-(7x(3+3x))=0

We add all the numbers together, and all the variables

3x(x+5)-(7x(3x+3))-5=0

We multiply parentheses

3x^2+15x-(7x(3x+3))-5=0



We calculate terms in parentheses: -(7x(3x+3)), so:

7x(3x+3)

We multiply parentheses

21x^2+21x

Back to the equation:

-(21x^2+21x)



We get rid of parentheses

3x^2-21x^2+15x-21x-5=0

We add all the numbers together, and all the variables

-18x^2-6x-5=0

a = -18; b = -6; c = -5;
Δ = b2-4ac
Δ = -62-4·(-18)·(-5)
Δ = -324
Delta is less than zero, so there is no solution for the equation

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