If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3a-a=4
We move all terms to the left:
3a-a-(4)=0
We add all the numbers together, and all the variables
2a-4=0
We move all terms containing a to the left, all other terms to the right
2a=4
a=4/2
a=2
| n/2-9=2n-36 | | 10x+25=5x+140 | | -5(m-1)=-8-3(2m-1) | | 6n-15-7n=36 | | -2u+10=4 | | 15-2k=-5 | | 5(x+25)=50 | | 6=d/2+5 | | x^2-10=15é | | x×0.15+x=230 | | 300x1,000=420xX | | 0.35q=302.75 | | 4x+12=57 | | X.0.15+x=230 | | -x-8x=8 | | 3(x+2)=7(x-6 | | X^3-12x^2-32x=0 | | 3x^2-12=36. | | 21-5(7-9x)=121 | | D^3+6d^2+11d+6=0 | | 10b=(2b+5)-6 | | 12+3x=7x+8 | | –(5-x)=x+3 | | 3=r—12 | | (x+2x)=72 | | 5x+13+5x+19=119 | | 5x+10=-22-3 | | 5x-18=9x-14 | | 2x+8=-x+29 | | 3-4x=-28 | | 2x-3(2x-4)=3x=24 | | 15-12x=-15x+17 |