If it's not what You are looking for type in the equation solver your own equation and let us solve it.
12x+10x+30=30x
We move all terms to the left:
12x+10x+30-(30x)=0
We add all the numbers together, and all the variables
-8x+30=0
We move all terms containing x to the left, all other terms to the right
-8x=-30
x=-30/-8
x=3+3/4
| 3x3-21x2=-18x | | 12-x=x-2 | | 8n+4n-3=9 | | -9-(-1)=7y+15y | | a2-32=4a | | -12a=-72 | | x÷5-3=7 | | 200-2x=175 | | 64=3/4c-7 | | -7x-115=29-13x | | 2(x+12)=(x+4)(x-4) | | -121+11x=-4x+104 | | 4+0.14x=7 | | -(8m+4)=4m-2(6m+2 | | -11+x=-5+7x | | |1/4-x/4|=6/4 | | 3(3a-2)=39 | | 4x2.5=8 | | 6=n÷10 | | 282=4m+5(6-8m) | | -3n-27=-7-3n | | -11+4x=3x+15 | | 34=27-2/5x | | 3/2=5d-1/2 | | x÷3+5=7 | | 1.8x+10=9x+9 | | 3/2=5d−1/2 | | 2-x/15=3 | | 3(k+1)+11k=2(4+5)+3 | | 4.5/x=0.4 | | 3G-2=g | | 2/3x-2=12 |