If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( n )
7*n-49 = 0
7*n-49 = 0
7*n-49 = 0
7*n-49 = 0 // + 49
7*n = 49 // : 7
n = 49/7
n = 7
n in (-oo:7) U (7:+oo)
6/(7*n-49) = 0
6 = 0
n belongs to the empty set
n belongs to the empty set
| 7(2t+5)= | | 4x-3/9=3 | | 63.7= | | 7(x+9)=16x-63 | | -(6n+7s-6x)= | | 5x=4y+39x+72a+103b+42b+42x+5 | | 5x+2=72-5x | | -1=-2y+14x | | 16x=-8+17x | | 4p-10=5 | | x-5.3=27.6 | | 7x+13=-134 | | 10x-5=5-10x | | 4p-10=4 | | 2*3n+4=-26 | | P=2(4+W) | | 7+10c-5-9c= | | 6a+5b=43 | | -2.5(2a-4)=0 | | -3k=5k+7 | | 3x-12+22=90 | | 12n=1.56 | | a+.5a+(a+40)=180 | | 12x+30=18 | | 64/(2*2)-3 | | cos(x)=8(x) | | 18x+4=19x-3 | | 5t+7-9t=21 | | 0.75+4y=0.75 | | 2y+x+3-y= | | 6j=2j+10 | | 100=5 |