If it's not what You are looking for type in the equation solver your own equation and let us solve it.
b in (-oo:+oo)
b/4.2 = -5 // + 5
b/4.2+5 = 0
0.23809524*b+5 = 0 // - 5
0.23809524*b = -5 // : 0.23809524
b = -5/0.23809524
b = -20.99999983
b = -20.99999983
| -8/7*49y | | -8a=-5.68 | | 5*0-3y=15 | | 5x-1=39+x | | 4x-32=32 | | 10c^3-25c^2+15c=0 | | -8/7(49y+56z) | | 5.5-2.9n=-2.1-3n | | 8x-32=80 | | 1.2x=2.1x-9 | | -y-3y= | | 5(m-1)=11-m | | 5n=635 | | 4.1x-1=3.1x | | 23-6x=-13 | | r/7=10 | | 5z-61/2=z-4z+1/2 | | 12x-3=28x+9 | | -41+6x=19 | | (3+2i)/(4-i) | | 2.5(k+2)=1.5(1+k) | | -9x+25=-92 | | 5m-9=9-4m | | 1200-245=0 | | 4y-1=2y-3 | | r-3.6=-3.6 | | 15=5m-35 | | -9x+29=-25 | | 4x/7=x+5/3 | | 3(y-1)+y=37 | | -10x+54=194 | | 9x^2+9x+5=0 |