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a in (-oo:+oo)
-8 = a-9 // - a-9
9-a-8 = 0
1-a = 0 // - 1
-a = -1 // * -1
a = 1
a = 1
| -6=n+2 | | t/-4=5 | | d+6=9 | | (18+2x)/3=19.88 | | t+9=14 | | (2x^2+3x+4)(4x^2-3)=0 | | 14x-7+5=6x-7 | | (18+2x)/2=19.88 | | 8x-14=5x+3 | | (18+x)/2=19.88 | | 2k=20 | | (3x^3+4x^2+5x+3)(3x+3)=0 | | m+10=6 | | (18*1+2*x)/2=19.88 | | (5x^3-4x^2+6x+8)(9x+7)=0 | | a/-6=5 | | -9+t=-4 | | b+7=-3 | | d+9=11 | | 18*1+2*x=19.88 | | 8+t=0 | | (7x^2+9x+8)(9x^3+7x)=0 | | 2+a=-1 | | -5+w=6 | | 14=t+5 | | t+1=9 | | -15=w-5 | | 18x+yz=19 | | 2y-2=15 | | (4x^2+4x+6)(7x+5)=0 | | 2+m=12 | | -3+k=-3 |