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)
(3*r)/5 = 9 // - 9
(3*r)/5-9 = 0
3/5*r-9 = 0 // + 9
3/5*r = 9 // : 3/5
r = 9/3/5
r = 15
r = 15
| (21)(y)=231 | | 1/3x=3 | | -4=x(-11)+-4 | | 2(x+4)-16=22 | | 15x=4x+48-6x | | 5(k-4)= | | -16=x(-7)+-16 | | -16=x(-11)+-12 | | (X/2)+(Y/3)=13 | | 2m-5n=-6 | | 6(10+n)= | | 6+5(9-4x)-x=-432 | | -70.00-2.25x=-182.5 | | 3x-5=12-59 | | 9x/2+3(5x/2) | | 4x=2x-36 | | -16=x(0)+-16 | | 16=x(-10)+16 | | 70.00-2.25x=-182.5 | | 1/2x-5=10 | | 3a+8+2a=a+-9+1 | | 16=x(5)+16 | | 0.2x-0.2y=-28 | | 1/4(2x+90)=5x | | 5x-3+3x=17+12x-23 | | X/2+Y/3=13 | | 3/8x-1/3x | | -1/10x+1/2y=2 | | XxY=180X+Y+13 | | n+5=23 | | C=30+0.05m | | M/-3=-10 |