If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x+5.2=-13.1
We move all terms to the left:
x+5.2-(-13.1)=0
We add all the numbers together, and all the variables
x+18.3=0
We move all terms containing x to the left, all other terms to the right
x=-18.3
| 20=x3-16 | | 5(1-a)-3=-6(a-1) | | 3x+70=6x+38 | | (2+14x)+(10x+10)=180 | | z-12.8=8.1 | | 5(x-5)=2(x-8) | | −7+2(x+4)=13 | | 10x+162=180 | | ×^2-3x+1.5=0 | | 12+h=8-32h | | 4(r)=3.14^2 | | 84g-1-12g=112g-6 | | 42–13m=8m | | 13f=f+4 | | 5–4x=–3 | | 3e+82e-6=2+14e | | 2|m|+6=40 | | -9y+4=-32 | | 58+y=0 | | 2d-1=34d+9 | | -12=-4/3t | | n+–8=1 | | 7(-2x–3)=-77 | | 4(x-12)=-108 | | 1/2x-14=3/4+20 | | 6y+6=-3 | | 18=9(1+x) | | y-3.2=-4.9 | | 212-8c=c-11c | | 3/8+z=2/3 | | 4/7=5/6+y= | | 7x+7=-5+4x |