If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r in (-oo:+oo)
18/4 = r // - r
18/4-r = 0
9/2-r = 0 // - 9/2
-r = -9/2 // * -1
r = 9/2
r = 9/2
| -7+3x=34 | | 8*3=6*x | | 7(8+7r)= | | 1y-7+8y=2 | | 6*10=5*x | | -3a=48 | | (1/3)x+6=12 | | 15.10/2.75=o | | 9(5+m)-6(m+3)= | | s(8+2s+6)= | | 3*x=4*8 | | 11=3y+10 | | 3.5/5.2 | | 27.5/16.5 | | 9x^2y^6= | | k-39=18 | | 2.8/3.6 | | 7a-7=19+5a | | 3*x=5*10 | | 3/22= | | -2/3(6x-9)=-4x+6 | | 24=30-0.6m | | 96=3x+2x+6 | | x*x=2*16 | | 1/13= | | 3/7(49)= | | x*x=4*12 | | 2ln(4x-3)=4 | | 5/27= | | 2(x+3)-4x=5x+2 | | 5h+15-3h=2h | | 40+15n= |