If it's not what You are looking for type in the equation solver your own equation and let us solve it.
6a-2a+1=13
We move all terms to the left:
6a-2a+1-(13)=0
We add all the numbers together, and all the variables
4a-12=0
We move all terms containing a to the left, all other terms to the right
4a=12
a=12/4
a=3
| 3^x+5=9^x+3 | | 4a-2a+1=13 | | 4(2n-3)=24/6 | | 9x-8=4x+28 | | 20x+3=10x-8x | | x^2+805x+40000=0 | | t=16(t-6) | | 7a+2=-68 | | (9k+8)+73+90=180 | | (3e+2)+55+90=180 | | (4m-6)+(6m+6)+90=180 | | (2q-3)+(5q+2)+90=180 | | (2q-3)+(5q+2)=180 | | (2x+10)+36+90=180 | | (4x+19)+62+39=180 | | (4x+19)+62+36=180 | | (5x-8)+62+39=180 | | (8x-9)+41+78=180 | | 9x-4x=20x | | 500x0.24=f2x0.05 | | r/2.4r=16.8 | | 240=4-(12-6x) | | -x-912x=-216 | | q^2+5q+100=350-q^2 | | (x+4)(x-2)=(x+3)(x+4)(x+5) | | 7x+40=5x+30 | | 8x+5=4(2x+5) | | 10b+20-15=55 | | 15-4x=55 | | -7=6x+11-8x | | 6x+1+6x-14=9x+4 | | 3(c-5)=-2c+10 |