If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X+2X+9X=180
We move all terms to the left:
X+2X+9X-(180)=0
We add all the numbers together, and all the variables
12X-180=0
We move all terms containing X to the left, all other terms to the right
12X=180
X=180/12
X=15
| 5-x=28+7x | | (4z+3)2+(5z)2=150 | | -12=-2n | | 12=-5+r | | 4(x+3)+15=47 | | 2(j-73)-58=-48 | | 24=-3f | | 2n+2=3n-15 | | -12x-9=-9 | | -13=y-5 | | 1/5w+3=6 | | -9x-5=76 | | (4z+3)(5z)=150 | | -4(x-2)-2(x+8)=22 | | 9+4x=5+4 | | 9x+8=6x+7=180 | | 3y-6(y-8)=42 | | -4+4a=8a+16 | | X/3z=3 | | 2(x-3)+1=5x-3(2+x) | | 3x2=6 | | 10+x=2x-5=25 | | 5/2-2/2t=3+3/2t | | x2−7x=−25 | | 5x+15=-10x+3 | | 10w=3w+35 | | (3)x2x+61=77 | | 6(x/2+x/3)=(5x+2/6)6 | | 3(2x)+61=77 | | 6(20-2x)+5=4(2x+6)+1 | | (2t3)+61=77 | | 4(b-74)-40=48 |