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)
58 = x-(40/4)+50 // - x-(40/4)+50
40/4-x-50+58 = 0
18-x = 0 // - 18
-x = -18 // * -1
x = 18
x = 18
| 90=3y-15 | | x-32=50 | | 3x+43=9x-5 | | -15.00-12.00m=-123 | | 12-5=10x+1 | | 11x+5=13x-5 | | 5x+21=9x-3 | | x-12=90 | | (p+19)+(3p-39)+p=580 | | -12+2y=6y | | 34y^2-18y-40=0 | | x^3+8x-4x^2-32= | | 45-1=5 | | 10z+90+45=180 | | 57.9(3.29)= | | 6X+4+7=12 | | 90=5y-5 | | 5(-9)+3y=27 | | y=-5x*(-10)-10 | | 6(x+5)-5=28-2x-3+8x | | y=-5x*(10)-10 | | y=-5x*2-10 | | -2+7(x-3)=15x+2-8x | | (3x^2)^3(2x^2)^4/(100x^2)^2 | | y=-5x*2+7 | | 6(a-8)+20=4(a-6) | | 9x-6=6x+27 | | (3c-d)(2c-7d)= | | 18*2/3 | | -9x-6=6x+27 | | 4x+14=7x-7 | | -6(8+6)+5= |