If it's not what You are looking for type in the equation solver your own equation and let us solve it.
100+110+107+105+x=540
We move all terms to the left:
100+110+107+105+x-(540)=0
We add all the numbers together, and all the variables
x-118=0
We move all terms containing x to the left, all other terms to the right
x=118
| 100°+110°+107°+105°+x=540° | | 2/5xX=900 | | 11+2y=3y-9 | | x+2x+3x+30=360 | | -3/2x=5/3 | | 17-3x=5-6x | | x°+2x°+3x°+30°=360 | | 9=2-n | | F(5)={3n-5} | | F(5)={3n-1} | | 2(3x+5)=-64 | | 7x+3x+15=180 | | 9(x+7)=45 | | +8=3n+4 | | 8m-9=-15 | | x^2-12x-13=10 | | a-1/8a-5/6a=130 | | ¾x+3=21 | | 3/5xX=24 | | x+(x-14)=90 | | 5x+1=-(x-32) | | 2p-12=9+7(p+10) | | 3x5=15+6 | | x^2+5x-1941=0 | | 8y=2-4× | | 6x-8=2x+18 | | 9x+90=120 | | 3x×9x+5x÷34=1 | | x-1^2=25 | | 16y+8=22 | | x/3-x+2/9=4 | | 3x/4=x+5/3 |