3x+12x+4=4x2+8x+8x22x
First, you can take a 3 out of the numerator on the left.
3(x+4)x+4=4x2+8x+8x22x
Combine like factors on the top right.
3(x+4)x+4=12x2+8x2x
The x+4's on the right can cancel.
3=12x2+8x2x
The left can be divided by 2x.
3=6x+4
Subtract 4 from both sides.
−1=6x
Divide both sides by 6.
x=−16
3x+12x+4=4x2+8x+8x22x
First, you can take a 3 out of the numerator on the left.
3(x+4)x+4=4x2+8x+8x22x
Combine like factors on the top right.
3(x+4)x+4=12x2+8x2x
The x+4's on the right can cancel.
3=12x2+8x2x
The left can be divided by 2x.
3=6x+4
Subtract 4 from both sides.
−1=6x
Divide both sides by 6.
x=−16