If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2(x+3x)=135
We move all terms to the left:
2(x+3x)-(135)=0
We add all the numbers together, and all the variables
2(+4x)-135=0
We multiply parentheses
8x-135=0
We move all terms containing x to the left, all other terms to the right
8x=135
x=135/8
x=16+7/8
| 21x-12=8x | | 10x+9=21x-12 | | 10p+17=13p+5 | | 10x+9+21x-12=8x | | x+0.11x=4450 | | 2x-88=3x | | 12=3/7u | | 21x-12+10x+9=8x | | -2x-20=180 | | x+8^3=525 | | 8x+21x-12=10x+9 | | 2x(4x-5)=70 | | 3x=4=9x+3 | | 5x+6=74 | | x+15=6x-65 | | 8x+37=180 | | 9x-2=11x-8 | | m+5.50=102.50 | | 3x+3+6x+1=76 | | 6.5a=32.4 | | c-18=93 | | 6-4x=7-9x=8 | | 4x-3x-8=2x+x+4 | | 5x+(x+40)*3=600 | | 4.5x+100=226 | | 3b-13=32 | | 6c+9=57 | | 7v+5(1200-7/5v)=6000 | | 3-2(d-3)+d=0 | | 2y=6/7-13 | | a^2-16a-64=0 | | r+2.5=9 |