If it's not what You are looking for type in the equation solver your own equation and let us solve it.
9x+4+3x=12
We move all terms to the left:
9x+4+3x-(12)=0
We add all the numbers together, and all the variables
12x-8=0
We move all terms containing x to the left, all other terms to the right
12x=8
x=8/12
x=2/3
| -9x+13-x=-x-3+5x | | x(x-3)=2(x+7) | | 5+6b=1+8b | | (x-1)+3=12 | | -3(w-8)=6 | | 4K+7(-2-2k)=-3(k+1) | | -x^2-8x-6=10 | | 7.75+3x=25.75 | | -8k=-10-9k | | 8(3s+6)=264 | | 73=-6(2k+7)+5(3k+2) | | -6z-8=-7z | | 4x^2+48x-625=0 | | (x*0.06)+x=29500 | | 5x/14-12=x/7+6 | | 40*x+30=190 | | -4/7y=3/2 | | x2+20x-10=13x-5 | | 13x-8=4(3x+3)-4 | | 5y-10=3y-10 | | =12p-3 | | 0.7x=0.6 | | 3x5-0.5=1.9 | | 0.6x=0.7 | | 2z-1=8z-9 | | -4m+8=3-3m | | 2(2.3t-3.2=9.7 | | 2z+25=124 | | 2Xx(X-1/7)=0 | | -5k=-7k-8 | | 9x-7+7x+9+7x+9=180 | | 3b-4=1 |