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)
(9/2)*x = 90 // - 90
(9/2)*x-90 = 0
9/2*x-90 = 0 // + 90
9/2*x = 90 // : 9/2
x = 90/9/2
x = 20
x = 20
| 2x+2y-14=0 | | 2(x-5)-4x=5+3x | | 5/12u=71/5 | | 2j+3k-2j-5k=9 | | 2x+2y+(-14)=0 | | M=4C+92 | | 25-8k=-4(3k+5) | | -2x+-5=2+-x | | -2x+-5=2+x | | 2(3y-4)+10=4(y+5) | | 7a^2+70=49a | | x+-3x+10=-x+4 | | 8x-(x-5)=2(3x-8) | | 7*x=19 | | x+-2+3=9+2 | | 3+x+-4=2x+7+2 | | x+-4+7=3 | | -7+3n=-8(1-7n)+1 | | -10-3n=-2(7n-2)-3 | | -11+5x-2-3x=4x-1 | | 3x+-5+8=2 | | 4-6n-2=-2(7n-2)-3 | | -(4-5x)= | | -8(b-4)-3b=21 | | 4x+-1+9=7 | | b/9-34-39 | | -18=-3(-n+6) | | -4k+7+4=-1 | | x+-5+2=5 | | -1-4=3 | | 22=k+7-4k | | 25+4y^2=17y |