If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X+X+250=450
We move all terms to the left:
X+X+250-(450)=0
We add all the numbers together, and all the variables
2X-200=0
We move all terms containing X to the left, all other terms to the right
2X=200
X=200/2
X=100
| 9x-29=8x-8 | | 45+16m=349 | | 35n-126=189 | | (-3x)=2x+5 | | 5(2c-4)=10-9 | | 73=q+23 | | 32n-234=242 | | 13−2x=6 | | -2(2x+3)=-(4+1)-2 | | |3x-12|=9 | | 3x+4(1/4x+7/2)=22 | | c+-3=-18 | | -2(2x+3)=-4+1)-2 | | s+-6=-3 | | 5(s+2)=10 | | 7t+1/9=t+4/18+t-2/18 | | 15=8b | | 0.5(0.4x+0.3)-0.2(0.5x+0.25)=0.05x | | 3=f+5 | | 3(t+3)=12 | | c/2+5=18 | | 3(14+-4)+4y=22 | | -19=-v | | 3(p+8)+p=64 | | 32n-132=252 | | 4(×+1)-8=6x2(2+×) | | 120+8m=264 | | 84+18m=372 | | d/6+10=15 | | 8(9n-1)+9=9(8n+9) | | 34n-140=336 | | d6+10=15 |