4w(w-9)-7=-7(3w+4)-7w

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Solution for 4w(w-9)-7=-7(3w+4)-7w equation: 



4w(w-9)-7=-7(3w+4)-7w

We move all terms to the left:

4w(w-9)-7-(-7(3w+4)-7w)=0

We multiply parentheses

4w^2-36w-(-7(3w+4)-7w)-7=0



We calculate terms in parentheses: -(-7(3w+4)-7w), so:

-7(3w+4)-7w

We add all the numbers together, and all the variables

-7w-7(3w+4)

We multiply parentheses

-7w-21w-28

We add all the numbers together, and all the variables

-28w-28

Back to the equation:

-(-28w-28)



We get rid of parentheses

4w^2-36w+28w+28-7=0

We add all the numbers together, and all the variables

4w^2-8w+21=0

a = 4; b = -8; c = +21;
Δ = b2-4ac
Δ = -82-4·4·21
Δ = -272
Delta is less than zero, so there is no solution for the equation

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