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k in (-oo:+oo)
-4*k-8 = -10 // + 10
10-4*k-8 = 0
2-4*k = 0 // - 2
-4*k = -2 // : -4
k = -2/(-4)
k = 1/2
k = 1/2
| -4k-7=-3 | | -4k-6/7=-90/7 | | -4k-4/7=-144/7 | | -4k-3/4=79/44 | | -4k-1=-41 | | -4k-1=-17 | | -4k+9/10-2k=-171/10 | | -4k+6=44/5 | | -4k+6=-14 | | -4k+5/8=-27/8 | | -4k+5=-8+1/3k | | -4k+5+5k=35/8 | | -4k+4/5=164/5 | | -4k+10=-22 | | -4k+1/3-1/3k=-64/3 | | -4k+1=-43 | | -4d=48 | | -4d=20/7 | | -4d=-48 | | -4d=-16 | | -4d-9=-111/11 | | -4d-8=-40 | | -4d-3/5+7d=-6/5 | | -4d-3=5d-21 | | -4d-2/5=-162/5 | | -4d-2/3=3d+124/3 | | -4d-2=-2 | | -4d-1=-2d-9 | | -4d-1+7d=-14/11 | | -4d+9/10=-231/10 | | -4d+8=-25+7d | | -4d+7/9=16/9-5d |