If it's not what You are looking for type in the equation solver your own equation and let us solve it.
21+.08x=0.12x
We move all terms to the left:
21+.08x-(0.12x)=0
We add all the numbers together, and all the variables
.08x-(+0.12x)+21=0
We get rid of parentheses
.08x-0.12x+21=0
We add all the numbers together, and all the variables
-0.04x+21=0
We move all terms containing x to the left, all other terms to the right
-0.04x=-21
x=-21/-0.04
x=+525
| D=37+7t-4.9t^2 | | 3a-4a=3 | | −5x+3=−8x−9 | | -98=-6k-2 | | 7x+10+4x+10+3x+12=90 | | 24x-9-15x+2=23x-8-14x+17 | | 4y-9+y+27=7y+20-4y | | 40x-40=360 | | 312.60/6=x/4 | | 20x-20=360 | | 4x^2-25+25=0 | | 34x+190=360 | | 12x-10-16x=3(4x-4)+2 | | 6-4(a+3)=2(a-1 | | p/6=p+7/8 | | 28x-10-10-16x=3(4x-4)+2 | | −8=−3x+34 | | 5d=23 | | -9(v+4)+3v+7=5v+6 | | 5(u-5)=3u-21 | | -8=3(y-8)-7y | | 4.67=9.8m-200.7/45+m | | 8f+19=3 | | 20+2w=-6 | | 4.67m=9.8m-200.7/45 | | 5(x+5)=9x+29 | | -7y+4(y-3)=-18 | | 7/2y+3/5y=1 | | 11x-4(3x-8)=36 | | 7x+6-4(x+1)=6x+4 | | S(t)=14t^2 | | 1/2x-5=1/3x |