If it's not what You are looking for type in the equation solver your own equation and let us solve it.
12x-5(x4)=-20
We move all terms to the left:
12x-5(x4)-(-20)=0
We add all the numbers together, and all the variables
-5x^4+12x+20=0
We do not support expression: x^4
| -4(-7x-2)+3x=-4 | | 4(-2x+2)=14 | | 4x-10=x+3x-10 | | -13=v/7-11 | | 5(5x-3)=-8 | | 3x-9=140 | | -(-d+3)+2d=-9 | | 1/4(4/3x+12)=-3 | | (17x-13)=(5x=21) | | 1/x=999999999999999999999999999999999999999999999999999999999999 | | -5x-7+3x=-6x+5 | | -8x+6=-9x-6 | | 4(-5m+3+8m)=5(6m-20-4m) | | (1/2)6x+22=17 | | 5x+7+3x=-8+3× | | 3z-8+15z-2=180 | | 19-5k=89 | | 12.75w=129.25 | | Y=-2/9x | | 8x-1+3x+14=180 | | 6x15=90 | | 9(x+1)=7x-7 | | 10=u/2-2 | | -6+3a=-4 | | -2a+4=-5 | | 6a+2a=10 | | 3x+1(-2x+4)=-11 | | -3+2a=4 | | 5-2a=6 | | +6y=97 | | 3+2a=8 | | (2)x/2=1.6x2 |