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k in (-oo:+oo)
k+7 = 9 // - 9
k-9+7 = 0
k-2 = 0 // + 2
k = 2
k = 2
| d+2/9=-16/9 | | b+3=5 | | 1/2+x=17/2 | | 2+b=14 | | b/-3=6 | | x+6+2x-4=90 | | 9x-(4x-6)= | | 2y+15=7 | | 5v^3+3v^2-10v-6= | | -1/3+x=11/21 | | t=-7/10 | | 10+t=47/5 | | m+6=17/3 | | t+2=11 | | 2/9+m=-2/9 | | k+6/7=10/7 | | 4/7+x=-2/7 | | d+7=73/11 | | w/7=-1 | | w+7/8=61/88 | | 5u^2-50=0 | | t+3=7/2 | | a-3/8=7/24 | | x+10=93/10 | | 5+w=-6 | | m/4=6/7 | | w+1=-10 | | t-2/5=18/5 | | k+9=21 | | k+8=-1 | | Z=9z+-88 | | 3/5+d=67/45 |