15x^2-11-5x(3x+4)=3(7-4x)

Simple and best practice solution for 15x^2-11-5x(3x+4)=3(7-4x) equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 15x^2-11-5x(3x+4)=3(7-4x) equation:


Simplifying
15x2 + -11 + -5x(3x + 4) = 3(7 + -4x)

Reorder the terms:
15x2 + -11 + -5x(4 + 3x) = 3(7 + -4x)
15x2 + -11 + (4 * -5x + 3x * -5x) = 3(7 + -4x)
15x2 + -11 + (-20x + -15x2) = 3(7 + -4x)

Reorder the terms:
-11 + -20x + 15x2 + -15x2 = 3(7 + -4x)

Combine like terms: 15x2 + -15x2 = 0
-11 + -20x + 0 = 3(7 + -4x)
-11 + -20x = 3(7 + -4x)
-11 + -20x = (7 * 3 + -4x * 3)
-11 + -20x = (21 + -12x)

Solving
-11 + -20x = 21 + -12x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '12x' to each side of the equation.
-11 + -20x + 12x = 21 + -12x + 12x

Combine like terms: -20x + 12x = -8x
-11 + -8x = 21 + -12x + 12x

Combine like terms: -12x + 12x = 0
-11 + -8x = 21 + 0
-11 + -8x = 21

Add '11' to each side of the equation.
-11 + 11 + -8x = 21 + 11

Combine like terms: -11 + 11 = 0
0 + -8x = 21 + 11
-8x = 21 + 11

Combine like terms: 21 + 11 = 32
-8x = 32

Divide each side by '-8'.
x = -4

Simplifying
x = -4

See similar equations:

| y^2-25y-100= | | 6x^2+7x+12.25=0 | | c^2-29/14 | | 26x+18=5(5x+1) | | 3x+7=12x-5x+3 | | k^2-7/11 | | z+14=y | | 8-6x=4x+10 | | 9n=8n+26 | | x^4-2x^3+2h-1= | | -8-6x=4x+10 | | 1/3(t+9)=32 | | 3x+7=12x-5x | | 13n-3=10 | | 12+16/-1 | | 3y+42+5x=180 | | -(7x+1)-6(-x-7)=36 | | -8x+48=8x-48 | | 3/8x=30 | | ((3900x)+(1000))/(3x^2+100)=5.97 | | 0=4.3x^2-2.2x-2.6 | | y=m+d/x | | (2x*1)-4=136 | | 0.5(5x+15)=2.1-(x+3) | | (y-9)+2y+24=180 | | -7(x+8)-(3+5x)=-13x | | 9(c+3)=8c-7 | | -5+8x=2x+25 | | 3y^2=-10y-3 | | 14x-9+3x-4=13x-4+3x | | 1/4(t+4)=11 | | x^4-x^6=4+2x^2 |

Equations solver categories