If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-21=15x^12x
We move all terms to the left:
-21-(15x^12x)=0
We do not support expression: x^12x
| 3-2h=1 | | 80+2/3x=180 | | -2+8u=9u+8 | | 2z−4=2 | | -5.96+18f=18.3f-3.35 | | 3x^2-20x-73x=0 | | 6(10x-19)=426 | | x-(-1/20)=-11/20 | | 4x=2/x | | 8f=-6+10f | | 4=2/x | | -5.96+18f=18.3f−3.35 | | 2(2x-7)=-6 | | -4n-3=-3n+3 | | 6+4t=7t | | -7s=-10-8s | | 7/8m=1/10 | | -4+2v=6v | | 4m=8+6m | | -12p+20=-20-18p-20 | | (3+7i)(5-2i)=0 | | -7m-20=-5m+18 | | 15=12-1/6m | | 154=11(6x-16) | | N+4(n-3)=18 | | 2(3x-1)+2(4x+5)=5 | | 3x+2-6x=8 | | 275=50x+25 | | 3x+12-7x+1=-7 | | x+10=26-3x | | 5x+13-4=44 | | -7m-m=48 |