If it's not what You are looking for type in the equation solver your own equation and let us solve it.
m in (-oo:+oo)
45/50 = m/100 // - m/100
45/50-(m/100) = 0
9/10-1/100*m = 0 // - 9/10
-1/100*m = -9/10 // : -1/100
m = -9/10/(-1/100)
m = 90
m = 90
| x/7=8/21 | | (x-5)(x^2+2x+5)= | | 6y+2-8y=3-2y-10 | | =-2(7+6n) | | -4(x-1)-(2-x)=-6 | | -5/9y-(y-5/6)=1/54(y-6) | | 16x+8y=-17 | | 8n+10-2n=3n-2+5n | | 8n+10-22=3n-2+5n | | -2x-10=4+5x | | -3-2x=18 | | 8(3w-7)=6(4w+5) | | -15+2m=-11 | | 1/6(10x-3)=7 | | -5+2m=11 | | (x/3)+(4x+6) | | 5x^2-38x+21= | | -15+10= | | 12*x+2*x+2=352 | | 12*x+2*x+2=0 | | 9-a/a+5=a/a+5 | | 14x+2=0 | | -6x^2-216x-600=0 | | 7x^0= | | (x-5)(2x+2)= | | (-9p^5q^3)(9pq^6)= | | 11/3c+12-c+1/c+4=c/3 | | 9x+3(x-4)=10(x+-5)+10 | | -15+15= | | -6-4c=-14 | | f(3)=4x^2+5x-6 | | 6-(x-3)=2(x+1) |