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)
(4/5)*b+3/10 = 9/10 // - 9/10
(4/5)*b+3/10-(9/10) = 0
(4/5)*b+3/10-9/10 = 0
4/5*b-3/5 = 0 // + 3/5
4/5*b = 3/5 // : 4/5
b = 3/5/4/5
b = 3/4
b = 3/4
| -8(x-5)-(7x-8)=-16x | | 10-(3n-4)=6-4n | | 3(m-4)=5m+10 | | 41/5/3 | | 2(4x+5)=-39+41 | | 3/-6 | | 0.1(60)+0.5x=0.3(60+x) | | A=2(pi)rh | | -.01(5x+4)=.04-.01(x+4) | | 5x+5=5+2x | | 3x+7+5x=-25 | | -3(x-7)=3 | | 2+5x+7x=86 | | (-x+y)dx+(7x-4y)dy=0 | | x/23.6-x/35.1=900 | | n+3=2(n+5) | | 6-x/3=9 | | 23-x=x | | 6y+9=9y-4y | | 80+a^2-18a=0 | | 23-x=7 | | 5/8t+14=-11 | | 15x=-42 | | 8(x+1)+1=2x+6(2+x) | | x-2+2x+11+2x+11=180 | | 8=4/5k | | 5+x+7x=61 | | -.3+1.5=x | | -.03+1.5=x | | 2x-9+x=-18 | | 5x^2+7x+24=0 | | 2*a+3*b=11 |