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)
(-2*x)/5 = 20 // - 20
(-2*x)/5-20 = 0
-2/5*x-20 = 0 // + 20
-2/5*x = 20 // : -2/5
x = 20/(-2/5)
x = -50
x = -50
| 10=16x+2 | | Z+(Z-2)+5(z-2)=30 | | 0.5k+1=7 | | 2(X-4)=3(X-8) | | (2x-3)(3x-4)=0 | | 0.05(60)+0.8x=0.3(60+x) | | 0=5y+x+10 | | 0.05(60)+0.08x=0.3(60+x) | | 4x+10=20-x | | -39=-3x+6(2x+7) | | 85=w/5 | | 100xn=1.78 | | 9/w=25/100 | | (5y+28)=9y | | 0.06(y-5)+0.16y=0.18y-0.01(20) | | 10+2x=20-3x | | 9k+(-2k)+k= | | a/124=75/100 | | 18(2w-8)=9(4w+2) | | -4(22x-2)=-80 | | V=14+-6v | | 3x-28=26 | | 16.8/7 | | 25=2(4v-7) | | -10+z-1=7+5d | | 3(x-2)=6x-10-3x | | 11a^2+32a+18=-7 | | 2[3x-4]=50 | | -1/2x@d | | 53=g-15 | | a/0.4=40/100 | | 5x-(x+3)=3x+6-5 |