8x(5x+3)=15x-7

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Solution for 8x(5x+3)=15x-7 equation: 



8x(5x+3)=15x-7

We move all terms to the left:

8x(5x+3)-(15x-7)=0

We multiply parentheses

40x^2+24x-(15x-7)=0

We get rid of parentheses

40x^2+24x-15x+7=0

We add all the numbers together, and all the variables

40x^2+9x+7=0

a = 40; b = 9; c = +7;
Δ = b2-4ac
Δ = 92-4·40·7
Δ = -1039
Delta is less than zero, so there is no solution for the equation

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