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)
15-(x/2) = 7-x // - 7-x
x-(x/2)-7+15 = 0
1/2*x+8 = 0 // - 8
1/2*x = -8 // : 1/2
x = -8/1/2
x = -16
x = -16
| 4x+2x=5x-5 | | 2*x-1=511 | | x1/3=27 | | 2x-(x-2)=3 | | 100+9(y-8)=64 | | 2*3x+2=256 | | 25x^2+50x+169=0 | | -9-2(-2x-28)=5(-x+13)-44 | | 0=2x+2y | | 8sin^theta=4/8 | | -25x^2+90x-81=0 | | 3s+6S+5r-2s= | | 7(c+2)+3(c-2)= | | 4w+3w+(6w-3)= | | 6x+5=2x+30 | | -29x^2+90x-81=0 | | 109+6x=106 | | 5x+2x=8-x | | 7d+4=4d+19 | | 7d+4=4d+18 | | 8(c+2)c=5 | | -7+6m+1.6=1 | | 6m+(m-2)4-2=0 | | 6a-7a=3 | | 49x^24=0 | | 72/x=0,072 | | 11x-28+0=0 | | A=(2x+y)(2x+y) | | 3-5m/4=8 | | -49x^2+21x+4=0 | | 3x+8=5x+x^2 | | 4=2xy+2xy |