If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X+2X=125
We move all terms to the left:
X+2X-(125)=0
We add all the numbers together, and all the variables
3X-125=0
We move all terms containing X to the left, all other terms to the right
3X=125
X=125/3
X=41+2/3
| 7(w+1)=-3w-3 | | 37+58+x=180 | | 2y-21=-5(y+7) | | 3y+10+y=180 | | 48+78+x=90 | | Y=1.8x-4.2 | | -18=6x+7x-16 | | 8=-4p-4 | | 130+y=180 | | -7-3n=26 | | 3.14=6.28x | | X+80+40=70+y | | 82+32+x=180 | | 8x-4-2x=-10x | | 9x-3-8x=30 | | 15^6x-7=87 | | 153+12m=345 | | -.2b^2+15b-250=0 | | 6(x+2)=24x= | | -6=k/6-7 | | 10+k/1=10 | | x^2+5x=−9 | | x^+5x=−9 | | 8x+4=7x+13 | | 6=b8b=48 | | 4x^2+64x-138=0 | | (v+6)^2=2v^2+10v+28 | | (v+6)^2=2v^+10v+28 | | 144+9m=252 | | 8(x+6)=9(x=3) | | 9a^2-2a=-2 | | 21n-72=306 |