If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-a+3a=12+4a
We simplify the equation to the form, which is simple to understand
-a+3a=12+4a
We move all terms containing a to the left and all other terms to the right.
-1a+3a-4a=+12
We simplify left and right side of the equation.
-2a=+12
We divide both sides of the equation by -2 to get a.
a=-6
| x+1=6x+46 | | 256x-20x=-2 | | y=4x^3+2x^2-2x-1 | | 162=9r | | 8-5m=m-2m | | 2x+3=77 | | 4c+4d-7(2c-7d)= | | 1+2v-6=-9 | | x^2-7x-16=0 | | y=12(x-7)+98 | | 120+0.6x=70+0.8x | | 1+2v-6=-8 | | 12=12r | | 13d+4=9d+24 | | 25x=-8.3 | | 1+m-2m=5 | | (7)(sec(x))-7=0 | | 2n-12=8 | | 3x*4+10-8x=98 | | 5(-7+4x)=85 | | c=39.52+0.25x | | 3(x-2)=14.1 | | 5a(3x-4y)=3ax-7 | | Y*700=70000 | | 2(a+1)=19 | | 30.8=4c-2 | | f(n)=4n-7 | | 7u+9v-6(3u-7v)= | | 6e-2=47.8 | | -2(x-5)+4x=-2 | | 2s-5=10 | | 12x+43=6x+29 |