-0.3a-0.5a(a+16)=0.8(a+15)

Solution for -0.3a-0.5a(a+16)=0.8(a+15) equation:

-0.3a-0.5a(a+16)=0.8(a+15)

We move all terms to the left:

-0.3a-0.5a(a+16)-(0.8(a+15))=0

We multiply parentheses

-0a^2-0.3a-0a-(0.8(a+15))=0


We calculate terms in parentheses: -(0.8(a+15)), so:

0.8(a+15)

We multiply parentheses

0.8a+12

Back to the equation:

-(0.8a+12)


We add all the numbers together, and all the variables

-1a^2-1.3a-(0.8a+12)=0

We get rid of parentheses

-1a^2-1.3a-0.8a-12=0

We add all the numbers together, and all the variables

-1a^2-2.1a-12=0

a = -1; b = -2.1; c = -12;
Δ = b2-4ac
Δ = -2.12-4·(-1)·(-12)
Δ = -43.59
Delta is less than zero, so there is no solution for the equation