If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x+2x=89
We move all terms to the left:
x+2x-(89)=0
We add all the numbers together, and all the variables
3x-89=0
We move all terms containing x to the left, all other terms to the right
3x=89
x=89/3
x=29+2/3
| 7a=15+2a;3 | | m=2-5m+8 | | 7+5b=6b-1 | | -5(y+1)+4(3y-4)=6(y-3)+14 | | x=18/12=1/4x | | (6x+3=27)=(2x=8) | | 129=-x+174 | | y=5+(2√5)/5+0.2-6 | | 4−|2x−1|=−3 | | y=4•(5/4)+√4/√5+0.2-5•(5/4) | | 9y+1-7y=3+y+7 | | y=5+2/√5+0.2-25/4 | | -y+19=172 | | 81-v=237 | | -8=x+2/2 | | 8x-9=9x-2x | | 5/8=m/12 | | -3y-15=9 | | 5(x-1)^2-7=20 | | 191=111-x | | 9+x=162+ | | 0.08(y-7)+0.14y=0.12y-0.6 | | 9-7c=-5 | | |2x|-12=-2 | | 6t-2t^2=0 | | 7=-4R+6+4r | | 0.35x+0.7(35-x)=0.6(35) | | 5x/5=4x+3*2x/6 | | -4y-7=3y+14 | | 5x/5=4x+3*2x/1 | | 5m^2-26m+33=0 | | 5x/5=4x+3*2x/14 |