If it's not what You are looking for type in the equation solver your own equation and let us solve it.
s in (-oo:+oo)
s/21 = 11/7 // - 11/7
s/21-(11/7) = 0
s/21-11/7 = 0
1/21*s-11/7 = 0 // + 11/7
1/21*s = 11/7 // : 1/21
s = 11/7/1/21
s = 33
s = 33
| -2a+24=-6+8a | | s/30=7/10 | | -56+5x=9x+36 | | 3/4*1a=12 | | 11u-56=10 | | -61=x-14 | | (4m^3)(-2m)/8m^-1 | | 91=-5+3(-5x+2) | | 3k-4=8 | | 10/q=5 | | 3r=-7+2r-12 | | 8=4j | | 15+3*3= | | 64/m=8 | | -6(1+7x)+5x=105 | | 332=4q | | 19h+11=49 | | 2x-x+13=0 | | 18*p=2 | | 2/3(4x-)=-2 | | 12k-5=19 | | 19-2v=1 | | 18+7+2-4*4= | | 9x^2-6x^3=0 | | -3(5x-2)=22-7x | | 4=20/b | | 3(6y-3)-y= | | 63=9v | | 4s+25=-s | | y=-3x^2+9x+1 | | 12(3x-1)=8(3x+1)+100 | | 7=d/5 |