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)
Y = (1/21)*x-121 // - (1/21)*x-121
Y-((1/21)*x)+121 = 0
Y+(-1/21)*x+121 = 0
Y-1/21*x+121 = 0 // - Y+121
-1/21*x = -(Y+121) // : -1/21
x = (-(Y+121))/(-1/21)
x = 21*(Y+121)
x = 21*(Y+121)
| -3=0.7x-2(0.4x+1) | | -6(-4)+10=-14 | | -2a-6=-28 | | (x*x)-7=(x*x)-6x-7 | | 1/u+1/v=1/f | | 4x^2+39x-42=0 | | (4y+8)-(4+3y)=7 | | 2/17x+14 | | 6/2/7 | | N/-10+7=10 | | 39x+89=39x+52 | | 4s+5-3/4s=3/4s-5 | | 2d=5d-18 | | 4n+3x=3 | | 19-(2x+3)=2(1x+3)+1x | | -(5x+6)-x=-6-6x | | -2k=63 | | 12x+5=104 | | 4x+x+1=8x-3x+1 | | 3/4x-1/4=13/4 | | 5y=-4-2y | | c-15=-4 | | 5-3x-7x+6x=0 | | -7=(1x-9)-3x | | 1.25x+30=2.50x+10 | | 1.7x-2.3(x+5.2)=-(11.8-x) | | 6x+2=5(x-3)+8 | | 3(3x+3)=12x+4-3x+5 | | 5=5(x-4) | | 12-4(2x-11)=-3(2x+4) | | m+3= | | 8=16+8x |