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)
16 = m/(-28) // - m/(-28)
16-(m/(-28)) = 0
1/28*m+16 = 0 // - 16
1/28*m = -16 // : 1/28
m = -16/1/28
m = -448
m = -448
| x^2-47x+420=0 | | 3n+7n+3= | | M^2+16m+42=3 | | 7x-1=e^2 | | 1/2n-2=6 | | 2.5=2n-5 | | 0.72=0.49(x+1.4) | | 9j+1=19 | | 3x(a+2)=2 | | 5g-3=12 | | 10x-35+6x-3=90 | | 70=3v*2 | | x^2-12x-189=0 | | g+7.1=-3.5 | | 462=6j | | 4x-(x-1)=14 | | 25x-3=50x+17 | | 4.4=1.3-0.6y | | 30-2*x=-6 | | 5u*2-90=0 | | 30X^3+-90X^2+50=0 | | H/19=27 | | 4x+5-5=25-5 | | 30X^2-90X^2+50=0 | | 9a-10=62 | | 30X*2-90X*2+50=0 | | 7(12)=x | | 10z=-950 | | 150=23x+15 | | 30X*2-90X*2=0 | | -18t+t+8t=18 | | Q/28=12 |