If it's not what You are looking for type in the equation solver your own equation and let us solve it.
30=3x(x)
We move all terms to the left:
30-(3x(x))=0
determiningTheFunctionDomain -3xx+30=0
We move all terms containing x to the left, all other terms to the right
-3xx=-30
x=-30/1
x=-30
| 24r+48=18r-36 | | -20y+10=-6-12y | | -32=15+d* | | 360/2=72x | | P(x)=-0.5x^2+3-2.5 | | (3+w)(4w+1)=0 | | 1/(3x)-5/(6x)=17 | | 4x+1=9x–49 | | -4/5f+1=-15 | | X+15=2(3x-10) | | 13x=-78+39x | | (X)=1,2.x | | 27.9y-11.2=7.3y-12.6 | | X=1,2.x | | -8-3x+5x=2 | | 14000+300x=800x | | 5x+23)=(17x-41) | | 12.r=7.6 | | 120+(10x-40)=180 | | 11.r=3 | | 129+7x-46+9x+11+5x+17=540 | | 3x+11=6x-9 | | 79+(6x+47)=180 | | (5x-4)+24=90 | | x25=625 | | 5200-80x=4920 | | (x+5)(x-4)(2x+3)=0 | | 36=36x=8 | | 8x-16=20-4x | | 2(2x+4)=124 | | -5(2x+9)=55 | | 3(1+3x)-(1–4x)=15 |