If it's not what You are looking for type in the equation solver your own equation and let us solve it.
6.8x-3+x-2.1=0+0
We move all terms to the left:
6.8x-3+x-2.1-(0+0)=0
We add all the numbers together, and all the variables
6.8x+x-3-2.1-0=0
We add all the numbers together, and all the variables
7.8x-5.1=0
We move all terms containing x to the left, all other terms to the right
7.8x=5.1
x=5.1/7.8
x=4.63636363636/7.09090909091
| 0=-16t^2+92t+140 | | 4n+8(3n-9)=12(2n+2) | | (3x+2)(x+5)=23 | | 4x+3=3x=8 | | 15x=-27x | | 8n+10=-24+7 | | (1/7)/x=14 | | (14x-3)+30=16x+11 | | x+1/3=5/13 | | y/2=-10/2 | | 10x-4+7=5x+5 | | 12x+37=-63+7x | | 8x=3(x+10) | | 36-3x=3-6(x-8) | | 14+3x=5x-4x | | a/9-5=7 | | -0.10(48)+0.55x=0.05(x-16) | | 3/2(x-3)-5=19 | | 1/9(x+1/9)=1/6(×-1/9) | | 3(p+7)=6(p+2) | | 4-5cc=1/2 | | 286=3.14(7l)+153.86 | | 6x-8x=5=2(x+2)+7 | | -x+-4=-25 | | C=85r+60 | | 3w=6(w-2) | | 2+u=5 | | 3(x-4)+9-8x=37 | | 14x+140=7(2x+20) | | 4x-5=16+1x | | 3(5x-7)=47-2x | | -27+r=-57 |