If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(-5/3)*x = -25/21 // + -25/21
(-5/3)*x-(-25/21) = 0
(-5/3)*x+25/21 = 0
25/21-5/3*x = 0 // - 25/21
-5/3*x = -25/21 // : -5/3
x = -25/21/(-5/3)
x = 5/7
x = 5/7
| 0=-x^2-2x+30 | | 6y-27=105 | | 4(x+11)=5x | | 2(3m-5)-4(m-1)= | | 5(3y+7)-4y=13 | | 15-.5x=21 | | 4+5k(4+3k)= | | 0=sin(x)+0.5*cos(2x) | | (5/7)*(5/7)*(5/7)*(5/7)*(5/7)*(5/7) | | A-0.1A=32450 | | 14x-5x=36 | | (3/7)*(3/7)*(3/7)*(3/7)*(3/7)*(3/7) | | .5x+22=20 | | 5(3y+7)-4=13 | | 4k+5(3+2k)= | | 3x-80=x | | (5/7)*(5/7)*(5/7)*(5/7)*(5/7) | | A-(10A/100)=32450 | | 4x-3+2x=5x+9 | | 6n+24=-36 | | A(10A/100)=32450 | | 12x+3=11x | | 6n-20=34 | | (5/5)*(5/5)*(5/5)*(5/5)*(5/5) | | 8(90-8t)-9t=-10 | | P*33=3 | | A-(Ax10/100)=32350 | | 7n+20=90 | | (2/5)*(2/5)*(2/5)*(2/5)*(2/5) | | 4k*5(3+2k)= | | 5n+13=23 | | 4x=4(5-x) |