If it's not what You are looking for type in the equation solver your own equation and let us solve it.
^2+4S-13=0
We add all the numbers together, and all the variables
4S=0
S=0/4
S=0
| 1/10x+5=x-13 | | 44+3x=x+20 | | 59049=3+(3^x) | | 6x+10=3x=7 | | -8(5.5-2x)-9.5=(3x-10) | | 12–5x=x+6 | | 4(n−3)+2n=12 | | 5x+15x-6=5(4x+3) | | C=πd;d | | 50=(10)(2)h | | 8=16n-8n | | -7(x+7)+5=-44 | | 332+b2=552 | | 17.50x+3.50x=125 | | 3(k+5)=-2(3k-6( | | 13+-7=-4(5x-10) | | 71=7y+1 | | n/8-6=2 | | 3(y+7)=37 | | b+1.5(b+2)=15+2b–9 | | (8x+36)+(7x+39)=180 | | 150+(225)(3.5)+225x=2000 | | b+1.5(b+2)+15+2b–9=90 | | 2x+-31=123 | | x+9+74=180 | | 1.5(b+2)+15+2b–9=90 | | x^2-18x+410=0 | | 150+(225x3.5)+225x=2000 | | 2(4x+8)=-47+55 | | 35x-9=7(5x+7) | | 1.5(b+2)+15+2b–9=90 | | -(x+7)^2-10=0 |