If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
(4/7)*x-3 = 0
(4/7)*x-3 = 0
(4/7)*x-3 = 0
4/7*x-3 = 0 // + 3
4/7*x = 3 // : 4/7
x = 3/4/7
x = 21/4
x in (-oo:21/4) U (21/4:+oo)
6/((4/7)*x-3) = 0
6/(4/7*x-3) = 0
x belongs to the empty set
| (5x+2y)-(7x+4y)= | | (1-x)(1-x)x=1 | | (1-x)x^2=1 | | 84x^2+33x+3= | | (1-x)x=1 | | x^2-64x+168=0 | | logy+2logx=0 | | 3x-1=3(x+5) | | -1/8(24x-56)= | | (4/a)^-3 | | 35-7x=5 | | h=16t^2+8t+96 | | Ax+fy=k | | 9y^2-16y=0 | | 18y^2-33y+10=0 | | 9n-18=-4+2n | | 5y-6=-30+y | | -2y+3=4y+6 | | x^(-1/2)=2/3 | | 3.3x-32=2.5x+4 | | n=1.96 | | 5u^2=-13u-6 | | X(.2)=900 | | h=-16t^2+50t+448 | | 20x+7-5x=5x-7 | | x+39+x+7=8 | | 2/5-7(5.4) | | x(x+5)(x+7)(x+12)+150=0 | | 15+12=a | | 16x+22-2x=2x-22 | | 23+2x+6-5x=8 | | m^2+54=0 |