If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4x-30+2x=12
We move all terms to the left:
4x-30+2x-(12)=0
We add all the numbers together, and all the variables
6x-42=0
We move all terms containing x to the left, all other terms to the right
6x=42
x=42/6
x=7
| 80/25=10p | | 7/9x+5=33 | | 7/6*r+28=-28 | | 5n=11^4 | | x(7/2x)=14 | | 12x/7-6=-11 | | 6x=30-18 | | 12h-13=6 | | 13=2(x-1)+3x | | 5x^2-11/2x+3/2=0 | | 2^4x=8x+5 | | 44=2(r)(3.14) | | 4.9t^2-10.1t-75=0 | | 7/22(44)=2(r) | | 202.5=36t-0.8t^2 | | 14w=5w+45 | | y-94=582 | | 5x^2-11/2+3/2=0 | | -4=h-20= | | 5^9+q=2^3 | | 9x+36=x(x) | | 660=22000*(.35-x) | | 7x+4=1x+3 | | 3x+(2x+20)=90 | | 2.5(x+4)=4.1+16-1.6x | | -234=x+183 | | 10x+18=24x+40 | | x=-1,x=-6 | | 4×+7y=-135 | | (6x-3)(2x+13)=360 | | 36=1/2h(6-3) | | 7/8(x-3)=-1/8 |